Electric skateboards - I knew they had to be out there, but Casey Neistat introduced me to them. No, not in person, but on his videos from New York.
I've bought one from Queensland in Australia. It's electric, it's carbon fibre, and it can be converted to/from off/on road. It's fun.
Here is a very short little Father's (or is it Fathers' day?) clip of some off road electric skateboarding.