What could go wrong
I had a deposit on the Aptera (that Speedog showed earlier) - they kept pushing back the delivery dates and updating the product.
When they lost (badly) at the X-prize competition, it was the final nail. I requested - and received my deposit back.
The concept I was interested in, and still think is the best approach, is a fully electric power plant with a small efficient on-board generator - but in reality they never came close to building that version.
I remember Dick Rutan reviewing the Honda Insight (original version) and saying that on-board generator was the way he thought that car should have been built
I used to know one of the lead engineers for Aptera. When my son was in Cub Scouts his troop marched in the Vista Christmas Parade and the guy from Aptera was driving that car ahead of us as we marched. I took some pics of my son in that car after that parade. He was a good guy, hope he moved on to bigger and better things.