Years ago I saw some one who had sawed off the back end of a late 1980s Chevy cavalier (or similar) and turned it into a portable generator trailer for his EV. This was so long ago it was probably an EV conversion of some kind.
One of the most interesting projects he did was to build a trailer from the front clip of a similar VW Rabbit, engine and transmission etc. He then used this trailer in a pusher configuration to take the electric VW Rabbit on extended trips. The engine was controlled by a hand throttle in the car. Apparently the handling was surprisingly acceptable in this configuration.
Edit - Found the link:
https://web.archive.org/web/20121105135914/http://www.mrshar...