Well, I can't say I've ever seen a "Nouveau Riche Sport Sedan" but the animators do seem to pay some attention to detail in talking about cars.
The other day I was watching the episode "That was then, This is dumb" with the stereo turned on. I hear a lot more that way. I noticed the characteristic lumpy, rolling idle of the beetle as it rolled up. "That's not a car, it's a time machine." They must have actually tracked down a VW beetle and recorded the engine sound. The sound is quite distinctive. Also, though I'm no expert on this particular "marque," the shape of the taillights seem to date this particular car to the early 1970's.
The Chevy van, otherwise known as "The Tank," can anyone date it?
I'm still working on trying to figure out what it is that Jake is driving. Seems familiar but I just can't place it. The Landon's "Jag" has a correctly-shaped grille, though I don't see too many cars like this around here for comparison.
It seems obvious now that Mr. Timothy O'Neil drives a Saab, probably a 900. When Daria and Jane were getting into the back seat the rear quarterpanel seemed to indicate a Saab--the thin "C" pillar, the flat rear deck, and the louvered quarterpanel. An interesting thing about the Saab: it uses brake fluid to operate the hydraulic clutch. So, as Mr. O'Neil says, "Self-esteem is like your car's brake fluid, you may not know you're low on it 'til you go to change gears--and nothing happens." --"That's transmission fluid!" Actually, O'Neil is right. Also if your car is low on transmission fluid it simply may not move at all, not merely not change gears. Not so sure about self-esteem though.
That heap that Trent is driving. I'm still trying to identify it. The pointed rear quarterpanel is somewhat reminiscent of some models of Buick but the grill isn't right. Ford Torino maybe? mmm..Still working on it. Someone else must have made the identification.
And then there's Aunt Amy's car.
Bob