The 1st edition had some conjectured vehicles, including the Sgt York (which was in testing at the time). 2nd ed had mobile laser vehicles for anti-aircraft defense. Most of the Soviet vehicles were true to form however, except for the hovercraft, and T-90. And they did change the BMP-3 to the real thing for 2nd ed. Some American vehicles that they did create for the game was the LAV-75, which was actually a pretty nice creation, and the remote turret M1 (and Leopard 3 in 2nd ed). In the design notes for 2nd ed, Frank Chadwick and Loren Wiseman both mentioned that they took those remote turret ideas from various things going on in military magazines and newsgroups. Both those two are still active on several T2k forums.