racing help

i design a racing game i need help with the comp players
does anyone know how to keep them track

also does anyone know how to allow changing cars for the game

search inthe forums about
“car AI”
which means car artificial intellingence

This might help you a bit.
http://blenderartists.org/forum/showthread.php?t=70379&highlight=BHP+racing

#hush#
month ago i have also dared to make a car racing game by my own.
and it is still uncomplete,I am good python scripter,i can write a script that will control
a car,through out the racing track with some intresting stuff like collision with player
and creating trouble etc if you are willing to work with me,we can certainly make it a good game to play.
What do you think?