Looks like a fun little car. Using the frame for onboard air is a trick I learned 4 wheeling. I used a air pump out of a 99 Jeep Grand Cherokee that I hard wired in with a simple on/off switch and pumped to a boxed frame. It had an inboard gauge that I used to keep an eye on the amount of air pressure when needed. It was great for airing up tires after a day of 4 wheeling.