Well, amazing coincidence, we tried out electric bikes two days ago. We hired them and went over twenty miles. We don't own bikes and last cycled, say, at least a year ago.
I had a Raleigh step through, husband had a men's model. Both had the big wheels, not the smaller foldaways.
The electric part was by Bosch, they were assist bikes meaning we had to keep pedalling and if we stopped pedalling, the assist did too.
They were easy to use, once round the car park on a trial run and we had the hang of it. Hill starts were so easy and much safer at road junctions (no wobbly moments). There were five levels of assist and eight gears, often we didn't need the assist at all.
We sailed past some other cyclists who'd stopped us earlier to ask about them. As we passed by, one shouted 'point made'!
I wouldn't have liked to have had to lift the bikes onto a car (roof mounted) bike rack, they were quite heavy. But getting them onto a low mounted model which fits to a tow bar would be quite feasible, even for me.
After the ride, we felt we'd had a reasonable amount of exercise without being exhausted. It was comforting to know on the way home that there was plenty of charge left in the batteries to use maximum assist if we'd needed it.