a couple sujestions
one- see if you can make it like pacman if you go out of bounds on the right you com out on the same side on the left and if you go to far up you come out on the bottom
two-put a little blood for when you hit them on the pave ment and maybe even on the car!
three-maybe make some icons that may make you invisable to the pedestrians or have guns or sumthen more intence!
four-make some pedestrians you cant hit or you will loose time such as old ppl and ppl with carages!
five-make some obsticals such as trash cans that randomly appear like the ppl do that will damage the car and have it to were if the car is damaged to much it wil explode!!
six-get a variaty of music rock, rap lots of stuf so every one will be happy (if you do thid would you put some mudvayne or slipknot on there for me for the idea?) well thats all i got!!!
these are just a few sujestions that i made you dont have to use any of them or all i dont care! i would have like it more like this but i cant talk for every one!