One of the best things about the GI Joe line is that it was truly immersive- vehicles played a large part in the line, and covered everything from tanks, to planes, to submarines to even a 7-foot long aircraft carrier, and a space shuttle! (and everything in between). Early vehicles were based on real military vehicles, whereas later ones were purely Hasbro creations. The bases, while only a handfull of them were issued (and I don't have them all) were incredible. When I was young much of my GI Joe playing was vehicle based. Most of mine are packed away and very hard to get to, so this album won't be complete for years.
I am missing more vehicles than I am figures- I've almost completed those, either first hand or purchased later. Vehicles were another story, they tend to be more expensive and harder to store. I always wanted the Space Shuttle they did in the late 80s but I never got it...when I was actively trying to complete the line in the late 90s and early 2000s, it was always more than I could afford.