its not a complete redesign between the first and last prototypes but you really do want to do changes before you start production. As far as how do I know the story is around. Im going to guess wikipedia goes through it but I was actually around when they did their first thing and it excited me just like this one but I did not put in for either. I might have if I was at a higher level of disposable income at either time than I am/was. It was only later that I found out they where able to end it on an even steven level though which impressed me when I saw the aptera reboot. Anyway I looked it up and here is the wikipedia https://en.wikipedia.org/wiki/Aptera_Motors although It seems off to me. I swear the initial car was not even electric but a very efficient ice engine maybe hybrid.