Car game tutorials required (need some help)

hi i making car game some thing already maded

but i need solve some problems and i need help tutorials tips any help

1 how to made intellect i mean rivals opponents wich will drive to finish turn and you should win it

and it should count when you finish first win screen when you finish second or 4 is lose screen

2 is how to made car drift and tire sound

3 how to made lap counter in game when you play wich show the stats and position 1 or last

other thing not so important but if you know some videos tutorial drop here please

if you like watch my game in progress here https://youtu.be/F16_ezgLPVc

this should be nice game thanks fro all freaks in youtube wich i watched and learned from there you help creat this

drop some videos please
Apkafe