I uploaded a video (with some stills in it) of a Power-Functions remote controlled car. It uses a dual-differential drive so that it can go straight well. (The video also shows stills of an earlier version that used a more conventional steering; but it was almost impossible to make it go straight.)

The Power-Functions parts are from the Monster Dino, which is a great fun to build but not so exciting to play with, since it moves fairly slowly and since you can’t steer it. The same is true for the alternate model, an alligator.

So I was trying to use the remote-control capability to build a vehicle that would be fast and maneuverable. The video shows the result, which is really fun to play with.

Not really NXT, but still fun!