The heavy-metal band is using natural gas and vegetable oil to power its 7,200-mile journey, but filling trucks up on sustainable fuels still has a long way to go
3 minMetallica, the band that blazed a trail for thrash metal with rugged guitar riffs and relentless drumbeats, is trying to do something similar for trucks powered by sustainable fuels.
The group, a rock music mainstay since their 1986 hit album “Master of Puppets,” is looking to burnish its bona fides on social issues by using rigs powered by fuels including biomethane and vegetable oil on its European tour this summer.
Working with European truck maker Iveco, the authors of songs including “Battery” and “Fuel” (sample lyric: “Fuel is pumping engines / Burning hard, loose and clean / And I burn, churning my direction / Quench my thirst with gasoline.”) aim to show that sustainable transportation in heavy-duty trucking is possible on European highways dotted with alternative-fuelling stations.
But the trucks’ limitations and the workarounds the band’s logistics providers are undertaking on the meticulously-planned 7,200-mile journey winding through the continent from Sweden to Spain also illustrate how far trucking is from using cleaner fuels in regular operations.
“You have limited options because of the lack of the infrastructure,” said Natasha Highcroft, a director of Suffolk, U.K.-based Transam Trucking, which provides logistics for Metallica and other bands. “We use alternative fuels as and when we can, as much as possible, but until the infrastructure is there it’s very difficult.”
The trucks run on natural gas, vegetable oil, electricity and hydrogen fuel cells, and will be hauling giant video screens, lighting and instruments across nine countries.
The workhorses of Metallica’s tour will be 10 heavy-duty trucks powered by renewable natural gas—such as methane from landfills—and four heavy-duty trucks running on biodiesel or hydrogenated vegetable oil. The trucks, dramatically decked out in Metallica’s fierce logo, can travel about 1,000 miles between refuelling.
Both fuels provide a significant reduction in emissions compared with regular diesel, although emissions experts say they aren’t nearly as clean as battery-electric or hydrogen fuel cell technologies.
The tour was due to kick off this week in Munich, Germany, and over the next two months will cover the continent from Italy and Spain in southern Europe to Denmark and Norway. The longest journey between shows, from Warsaw to Madrid, covers almost 1,800 miles.
Iveco, which is providing the eco-friendly trucks for Metallica’s tour, makes both battery-electric and hydrogen fuel cell big-rig engines, the types that governments in Europe and the U.S. are trying to press on truckers as soon as possible. But because of the lack of charging and fuelling stations on the long legs between gigs, the battery-electric and hydrogen trucks will be mostly for promotional use at concerts, said Gerrit Marx , chief executive of the Italian truck maker.
Marx said Iveco wants to highlight that renewable natural gas and hydrogenated vegetable oil are “more available and ready” than batteries and hydrogen while also being “way better than fossil diesel.”
Europe has hundreds of liquefied natural gas and hydrogenated vegetable oil, or HVO, refuelling stations. A representative for British energy major Shell , which is working with Iveco on the tour, said Metallica’s low-carbon journey wouldn’t have been possible even a couple of years ago.
Shell says its customers can access HVO in five European countries and renewable natural gas in Germany and in the Netherlands. That means that when low-carbon options aren’t available, the Iveco trucks will be fuelled with regular LNG and the HVO trucks will be fuelled with regular diesel.
A Shell representative said the Metallica tour will buy carbon credits to offset “unavoidable emissions“ generated by the low-emission trucks.
U.S. companies are also using renewable natural gas and biodiesel to reduce carbon emissions. But trucking specialists say the fuels aren’t available in sufficient quantities to power the world’s fleets, which is why regulators are pushing battery-electric and hydrogen fuel cell vehicles.
Trucking executives say the costs of operating those technologies are double or triple those of diesel and that they aren’t workable in a highly-competitive, low-margin industry like trucking.
Lars Stenqvist , chief technology officer at truck maker Volvo Group , said it is important that high-profile performers like Metallica amplify the capabilities of sustainable fuels.
Truckers will only adopt the technology when customers demand it, he said, so “This is music to my ears.”
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Gold miners are emerging as a compelling way to navigate market uncertainty, with analysts pointing to strong cash flows, attractive valuations and rising profit margins. As gold prices stabilize above US$4,000 an ounce, mining stocks could offer investors both downside protection and long-term upside.
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Gold is one of the market’s go-to hedges in rocky times. Don’t forget that gold miners’ stocks are too.
The stock market’s gains in 2026 belie the rocky macroeconomic picture: elevated inflation, heightened geopolitical tensions, and jitters about the artificial-intelligence trade. That backdrop, in theory, should be the time for gold to shine. Instead, the price of the yellow metal has tumbled more than 5% so far, after last year’s blistering 65% rally. In part, the U.S. dollar’s recovery has stymied gold, which benefited from the greenback’s weakness in 2025.
Even with the precious metal’s recent weakness, gold mining stocks could be the best way to profit from this year’s uncertainty.
Gold miners “are a valuable hedge against macro risks that would likely be damaging for equities,” BCA Research’s Noah Weisberger and Rishabh Shah wrote this week.
Concerns about the Federal Reserve’s next moves to tackle inflation, the increasingly crowded AI trade, and steep valuations for tech stocks are just some of the drivers that could help gold’s price get on even footing— and lead to even bigger gains for miner stocks.
These stocks’ prices tend to outpace gold’s moves, because the companies have fixed operational costs. So when gold’s price rallies, their profit margins soar, and vice versa. For instance, the VanEck Gold Miners GDX +7.39% exchange-traded fund has fallen 11% this year as the metal has slumped.
Now, gold’s price just needs to stabilize to help miners’ stocks take off, and that seems to be happening. The precious metal has recently found support above the $4,000 level, and has stuck in a narrow range since the end of June. But its price rose ever so slightly in July, ending a four-month losing streak for the metal. Technical analysis also suggests that gold is due for a comeback.
Barron’s recently wrote that the pullbacks for both gold miners and the metal itself are overdone. Senior technical analyst Doug Busch noted that the VanEck ETF is on the “verge of a breakout” and has the potential to hit $11o in early 2027, up more than 40% from its current price.
Gold miners also have more than their role as a market hedge going for them. Their fundamentals are solid, too, says Chris Mancini, portfolio co-manager of the Gabelli Gold Fund.
“Precious metals miners are generating substantial amounts of free cash flow given profit margins of over $2,000 per ounce, and are returning this cash to shareholders through buybacks and dividends,” he said in an email.
“Buying the miners is a cheap way to get exposure to the price of gold,” he added. His fund owns Newmont NEM +6.71%, a Barron’s stock pick last year, and Agnico Eagle Mines as top holdings, as well as miners Northern Star Resources, Endeavour Mining, and Kinross Gold K+8.59%.
Miners are better businesses than they used to be, the BCA team added.
“Capex is more disciplined, margins are high and rising…and they are largely independent of the AI story,” Weisberger, BCA’s head of equities, and Shah, a senior analyst, wrote.
That last part is key. AI is disrupting the software industry and many other services and information-oriented businesses, and investors have piled into AI stocks. But ChatGPT, Claude, Grok, and other large-language models aren’t going to replace the need to mine for metals.
“Equity portfolios can benefit from exposure to quality that is uncorrelated to AI risk, and gold miners fit the bill,” the BCA team said.
They recommend that investors buy the VanEck Gold Miners ETF, which owns top miners such as Agnico, Barrick Mining ABX +7.24%, and Newmont.
An important bonus for big gold miners’ stocks is that their valuations are attractive after the gold’s pullback, too. The VanEck ETF is now trading at just a little more than nine times next year’s earnings estimates. That’s a big discount to its five-year average price-to-earnings ratio of 14, according to FactSet.
What’s more, the ETF is currently valued at a more than 50% discount to the S&P 500 SPX -0.17%, which is trading for about 19 times earnings estimates for 2027. Mining stocks have typically traded at just a 25% discount to the broader market over the past five years. So there is significant upside for the group if valuations move back toward normal levels.
One factor that complicates mining stocks as a market hedge, of course, is if stocks bounce back, which has been the case so far in August.
But both the market and economic outlooks remain cloudy, and investors remain nervous about the Fed’s next moves and AI stocks. Gold miners should do just fine, even if the anxious mood on Wall Street persists.
