What folding trike, please.

[march]

Hi, I have a mobility scooter at the moment, but, would like to change to a folding electric trike. The idea is to exercise as well as help with mobility issues, I've been looking at the Jorvik folding bike, but, have no idea where trikes are concerned and feel I'm going around the houses. I'm also a oldie and would like something comfortable but not fast. Any help appreciated. I should have said, I would like to place it in my car when I travel too.