I agree re the weight problem Martin. I was watching Top Gear several weeks ago, and they had a battery driven car, something the size of the Yaris, however it cost over £30.000 and they stated that the Manufacturer couldn’t guarantee the life of the batteries for more than 5 yrs, cost of new batteries for said car?, a stonking £10.000. And it took 13 hrs to re-charge the batteries, when flat.But no doubt the way technology is expanding, perchance in the future, a battery the size of a watch battery will do the job.
One to keep an eye on.
Jim.
Lincoln .7