Man, that is awesome. Ha, it's funny to think that back about 15 years ago my brother and I would take our broken model rockets and turn them into cars and run them out at El Mirage. They had no controls so we just pointed them in the right direction and crossed our fingers that we didn't launch them through the side of someone's RV. I don't know about 200 mph but they sure went pretty fast.
You're living our dream man! Too cool!