Yesterday my wife and I were driving my regular gas engine car around town.  We were in a hilly neighborhood, so for fun I just shut off the engine -

 * * WARNING - shutting off your engine and leaving your key in the "off" or "acc" position will disable your power brakes and also could cause your steering wheel to lock * * *

and put the car in Neutral with the key back in the "on" position.  She kinda chuckled as we coasted down the hill, stopped at a yield sign, and continued on our merry way all sans gasoline.  Just a 2-minute adventure, but I told her, "This is how an electric car would be - totally quiet when you're going down hill."

I'd really like to try some kind of electric vehicle.  The Crystalite hub and bicycle combo seems to be the most straightforward.  I already have a couple old bikes lying around.  But I wonder about it long-term.  Maybe buy the motors and eventually end up creating some kind of four-wheeled vehicle that uses bicycle tires?  That way the hub motors are a good long-term investment?

Not trying to hijack the thread.