You've placed a lot of conditions on that one, but of course I would like to see them use an ebike. I just don't understand why any able-bodied person would want to add the extra weight, if they can ride a bike without all that. I'm also not impressed by some of the dangerous backyard engineering I've seen.

For what it's worth, I have 8 bicycles, a very economical car, and a motorcycle (with an engine larger than the one in my car) that's reasonably economical as well.