Hey Empty...I decided to book the GEM electric cars. After reading about them, I am really excited about it. We are planning to do the Cadillac Mountain Summit...I have already booked our pass. I'm not really worried about the charge because we are going to do this first and we will add the other stops based on our usage. We booked for 4 hours so that we will still have time for shopping, lunch, etc when we get back to town.
Good luck with your planning. ๐