I've seen more and more cars on the roads with small solar panels on their roofs. Charging batteries as they drive I assume. I have seen solar panels on caravan set ups for years but was surprised at the sudden increase in them on car roofs lately. I hope my current car survives until the upgrades are cheaper!
Maybe it'll be in a camper, so you can campout while you charge your battery.
The most stupid advertisment I seen is for an electric tractor. The tractor has mirrors so you can check your look why doing whatever you could do on an electric tractor. Can you imagine running out of juice on the back 40. What your gonna run a 40 acre extension cord to charge your tractor. You just can't make this stuff up.