Edit for some more guesses:
Clue 1: You’ve got to trust your instinct.
From the 311 song, the Lotus 3-11
Clue 2: Do you remember when you first got your own car?
Australia’s 1st car, the Holden FX Sedan
Clue 3: “Everyone has a plan until they get punched in the mouth.”
Top Gear reference for the Jensen Interceptor
Clue 4: The clue thread clues are the closest thing to randomness you will ever find.
The Plymouth GTX 426 because it looks like a random mash of letters and numbers together. And l really want that car.
Clue 5: No matter what you think of it, it is still a star!
I get the feeling this one is the Mclaren Mercedes SLR. Mclaren? Yes. But it also has the (Benz) star.
Clue 6: There weren’t a lot of gizmos back in the day but you could still easily get cut off.
Movie reference for the AMC Gremlin
Clue 7: Somewhat of a diamond in the rough.
Mitsubisi Eclipse GSX since they have a diamond logo