Infinite valve timing using individual actuators instead of cams, see Koeniggsegg's R&D.
Pressurized air instead of combustion- I think a new PSA product does this.
Battery swapping stations for EV's- you swap your depleted battery for a charged one, like Netflix for batteries.
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He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
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