DS GBA Multiplayer Uncompatibile. No, you can't. Nintendo DS don't support multiplayer for GBA games.
no
No, they use different sized plugs, so they're incompatable with each other
you drift using the l or r triggers on the back of your ds on a turn. you will turn more than usual and when you let go of l or r you should get a little boost. note: hold down l or r while turning...
A car is useful for alot of things. like transporting things and getting you and you family/friends to places.