If anyone is interested in a cutting-edge toad: Get a Chevy Bolt EV, it is dolly towable: Chevy Bolt Owner's manual (PDF)
See page 300.
You'll get a 240 mile EV. Make sure you get a Level - 2 charger, though so it can fully charge up (from empty) in about 9 hours (much better than the couple of days on 120V!). (You can use a Level - 2 charger at campgrounds in the 50A plug--I do it with my C-Max.)
Yeah probably costs a bit more than what you're looking for in a toad though.