Most cars in Fallout were electrically powered, though.Nalano said:Also, it would make gasoline (or ethanol) almost as important as water.
The microfusion cell is obviously capable of delivering insane amounts of power (enough to power laser and plasma weapons), so an electrical bike powered by those should be feasible.
And even if those are not available, building one out of scrap parts (maybe use the motor from a washing machine. Should be reparable)
might be an option.
Buuuuut Fallout lore doesn't like vehicles, so yeah, Couriers will walk on foot.