Well, when I was young, building models was a family hobby. We made the wheels roll, never using the plastic pins, but hangers for axles. Pen ink tubes for exhaust tips, etc etc. However, I don't have the time or patience to build the models anymore, so I collect the promos. Also, I like the idea that the cars are as old as the real cars, being at the dealership at the same time. A real piece of history, muscle car history. I have A, B, and E bodies mostly, and a couple other things. I really don't collect the C bodies. I collect high end condition cars, no junk. I have some of the rarest colors, also. It's fun, but expensive!