this is the best game ever! the only thing i would change would be the emotions, and you misspelled perturbed. i might also add a feature so you can re-add individual cars. you know, in the sequel. i understand about the time thing, and i think you had a great idea for a game! now that you have done it, people will be making spin offs all over!
for the seuel, you should add a multiplayer, where someone controls the cars or a car and tries to survive as another player controls the road. maybe also add a mode where you are the car and there is an ai for the road... in the sequel. as i said i understand that you dont want to change this one. i'm looking forward to your next game!