I think the main idea to have car teams is to work out who's on your team, just think, as soon as everyone leaves and gets 1/2 mile down the road its going to be
Who's on my team?
Is that car with me or is it the opposition?
Do i turn left with them or go straight on with the other lot?
Let alone some 100 miles down the road.
As putting numbers or markings on cars is not possible to do, putting everyone into groups of car manufactures makes it easier to work out who's on what team.
You wouldn't want to stick ya fingers up to a team mate would you 
So, who is Deeppurple? Anything to do with your choice of weapon (car, before you ask)? You did ask a question and express your selves as "little boys" is this also a clue? 
Ps. Seen the odds and Team 4 are in with a chance this year!
As you said, car's got nothing to do with pace, it's all in the navigation, fuel stops, toilet breaks, map reading, co-pilots nerve, MacDonald drive-thru, tyre pressures and of course how quickly you can clean the windscreen every 70 miles! ! !
Catch you all soon
The A.M Team