My first car was a 1968 Dodge Coronet 440. Metallic green outside, dark green vinyl roof, medium green vinyl inside. Very similar body to the Plymouth Satellite, and I think the front fenders were shared with the Charger and RoadRunner. Even though there was a 440 big block engine, for my car it was used as a model number because mine had the 318 small block V8. Plenty of power for a 17 year old. Paid for it myself too, a whole $1400 in 1971.
So I can say pretty definitely the red car is either a Plymouth Barracuda or a Dodge Challenger based on the proportions of the hood and trunk lid, and the Mopar rally wheels. There were no factory versions of those cars except two-door coupes. As I recall, the seats were very low and the doors very high - the bottom of the window was almost shoulder high. It felt a little like sitting in a tub.
A friend of my dad had a Challenger with a 383 Magnum and a vinyl roof. As the saying went, it would pass everything but a gas station - but it wasn’t the fastest or most powerful Challenger. That title belonged to the 426 Hemi, which as I recall got about 5 mpg on a good day. The 426 had two staged double-pumper (2 gas feed lines) Holly carbs rated for 850 cfm each. The air cleaner was an oval about three feet from front to back that covered both carbs. If you stepped on it hard enough to open all four carb throats, you could watch the fuel gauge drop - providing you could overcome the acceleration g forces and absolute terror of trying to keep the thing pointed in the right direction. I will never forget that experience.
Hope you all don’t mind reading a little blast from the past. It was fun to recall those memories and put them in writing.
Bob