What you are looking at is called 4ws, it turns the rear wheels the opposite direction that the front wheels are being turned........kinda like a monter truck.(not as extreme though)
It's purpose is to give the prelude better handling. It also helps out in parking. 4ws was first used by honda on some 3rd gen preludes, then they put in on a few 4th gens, and over in Europe the 5th gens could be had with it too. Not all the preludes had 4ws, only the specific 4ws models got it so it's a pretty rare feature. Nissan had it's own version called SuperHICAS. Mitsubishi jumped on the bandwagon also when they put it on thier GTO (3000 GT here)