I did not use the exact build I made in LEGO's digital designer, but the program was INVALUABLE when it came to working out the kinks in this model.
The pullback LEGO racers kits wound up being perfect for this. So this thing can zip around on the ground, too. Time to make a tiny police car to pull it over, I guess. ;>
I would probably revisit this design, there's a lot more that I could do to make it look more like the real thing!