We carry two Juicybike Urbans folded in the back of the car, either when we want to go exploring out of our area, or when we're off out caravanning. Lifting into the car isn't a problem as long as we take the batteries out first (aged muscles). Wouldn't want to carry them folded anywhere though - that's why there are Bromptons!
The wife can get 30+ miles on hers; I'm a bit heavier and get around 25 miles from the standard 10Ah batteries.