What is the connection between these things:

1973 Dodge Dart
1973 Dodge Dart: That thing got a 340?
1976 Cadillac Coupe de Ville
1976 Cadillac Coupe de Ville: Cruella de Ville had a red roof, IIRC
1976 Buick Skyhawk
Should be green like Kermit the frog

1977 Ford Ranchero (yeah, that one)
1977 Ford Ranchero (yeah, that one)

1978 Lincoln Continental Town Coupe
1979 Lincoln Continental Town Coupé
Red Leather
Red leather is a deal closer.
1979 Ford LTD wagon
1979 Ford LTD wagon: A Wagon Train, except with no sexual connotation whatsoever
LTD dash
Mmm... plastic


a.  Cliff  Clavin:  What are 6 cars that have never been in my driveway?
b.  They're all giant pieces of shit?

Seriously. What other possible connection could there be?

Am I missing any?