You have to remember if you want the vehicle to be a 0/0/0 car when you first purchase it or redeem a ticket that when the games asks:
"Do you want to use this car now?"
- that you toggle to 'NO' before you accept, otherwise you'll add 1 to the switches.
For many of the models I keep a 0/0/0 version of the car and 2nd one I use for racing or drifting (usually bought from the used car dealership).
Many collectors try to get every color available of certain models and if you collect 0/0/0 cars you can use them later to trade for cars that you want but don't have or can't find.