Here's a video of our car running a hall in our house.

http://video.yahoo.com/watch/7164676/18657928

I moved the front sonic sensors closer to the front of the car and I figured out how to slow down the wheels a bit.

Next thing, I think, is to build a better looking and stronger prototype using a car with more room to attach stuff. What other kinds of sensors should I try and what other kinds of tasks will they help the PIC do?

Again, thank you for all your interest and help.

Ken