I don't know why this is so
I don't know why this is so hard.
Pony Car. Is a sporty 2 door coupe or vert that is still practical. Not necessarily fast or great at the track, but fun to drive. Has seats for 4.
Muscle Car: car originally designed as family transportation but has since been installed with a high output high displacement engine. Great for quick acceleration times but not very good handling around corners. Can be 2 or 4 doors. Always has seats for 4.
Sports Car: Car designed to have the best performance in power and handling attainable. Always a 2 seater. Usually a convertible or with removable tops but can be a fixed roof too.