First I must say this is an awesome game!

What I was trying to figure out, is there a way to save human and computer players?

By default the human: Anonymous, car Ferrari spider comes up when you start the game. 

If you change name, and car, and even create computer players, is it possible to save them so after you exit game, and the next time you enter they are still there?

If the answer is yes, how do you do that?

If not, then I think it would be a cool feature in a future version of the game.  After 1 time setting them up, no matter if you exit the game and turn it off, the next time you play, boom they are right there, and the settings for default car and stuff, whatever you picked for them the last time.