I always wanted to see the recon bike in Renegade X too, and I think this method of acquiring it sounds pretty nice.
I would set the HP at 175, same price as a buggy, and weapon wise it should function similarly to a stealth tank, but with a 1 rocket per reload. And of course, it should be really fast, and maybe you should be able to see your character in third person mode riding it!
I don't think it should get its own vehicle count though. It should stick with the normal team count.
I think this would be a good "spice" for a future map.