I have a compressor in my garage that can fill tires with almost 80% nitrogen, which is close enough for me. I feel fortunate to have stumbled upon such a device.Around here the new car dealers add on paint and fabric protection, nitrogen in the tires, VIN etching, Lojack and other crap to their used cars that they don't advertise on the website. I see why people don't want to waste their time with these antics, and that's what makes Carmax appealing to them.