Bicycle Fun: Any substitues ?

I recently bought a mountain bike. Its a 24 speed, 15 inch aluminum frame bike with shimano gears and front suspension. I am still excited about it which is why I give the description. Today was the first test ride. As, I went off on the bike routes in the suburbs I realized how refreshing this was and how a bike at the gym could never make up for the real thing. That set me off thinking about how an immersive system such as a cave could help in this respect. There are two important things that are not available when you use a stationary bike - the cool fresh breeze that varies with your speed and the surrounding environment. If we could bring these two into the immersive system then that would be very close to enjoying a real bike ride. Hmmm... I wonder if someone has already designed such a system. Anyway... my ride was totally exhilarating. I was wondering why I had delayed buying a bike until now actually.