A 50 percent more efficient big rig? Meet Super Truck II
![](https://cdn.arstechnica.net/wp-content/uploads/2023/10/stii_batch-1_clay-model_designer-mirror_p8a0664-ret_rgb-scaled.jpg)
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Big Changes for Big Rigs as California Phases Out Diesel Trucks
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Freightliner's SuperTruck II previews diesel's more efficient
Semi-trailer truck - Wikipedia
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Big-Daddy Series Extra Large Super Duty Tractor
![](https://cimg0.ibsrv.net/ibimg/hgm/1024x576-1/100/633/tesla-semi_100633660.jpg)
Tesla Semi: 500-mile range, lower running costs than diesel and
![](https://upload.wikimedia.org/wikipedia/commons/5/58/Road_train_%2825%29.jpg)
Road train - Wikipedia
![](https://www.carscoops.com/wp-content/uploads/2023/02/Freightliner-SuperTruck-II.jpg)
Freightliner SuperTruck II Debuts With Active Aero, Efficient
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The Electric Semi Is Here, and Autonomous Big Rigs Are Next
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When Trucks Fly
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Electric Cars: Ford (F), Tesla (TSLA), Others Plan Battery-Powered
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Freightliner's SuperTruck II previews diesel's more efficient