It would be neat if there could be miniaturized nuclear reactors! i mean even if it could get scaled down to like XYZ 6x4x4 it could still fit in a car and the idea of a nuclear powered car (like in the fallout universe) would be awesome! heck imagine a nuclear bike :O! theres been times (especially with the arid area) where an engine or electric car isnt the best or just doesnt really work for the application, even my biggest most effecient haulers cant pull a plane more than a few kilometers and normally runs out of fuel and i have to use refueling cars. Have a great day! :D