C J Campbell wrote:


Eh. Why not wind-up springs or rubber bands? Or, better yet, some
large animal could be trained to pull a vehicle the size of a car. If
the animal was a plant-eater, it would be a continually renewable
source of energy. We could give the animal a name, such as 'horse,'
for 'horsepower.'

Nope, there are plenty of folks out there bitching about the carbon
footprint of livestock.