I'm putting together an emergency auto kit and am wondering if anybody has an opinion on the little 12-volt, 300 psi compressors that are sold at discount stores for $15 or so as a "quick fix" for getting a tire inflated long enough to drive it somewhere for repair. I've been reading that the pressurized cans of "fix it" foam basically ruin a tire, and so thought that a little compressor might be a good alternative if these actually work. Not that long ago on this forum we got a warning about the dangers of cheap compressors, so that was bothering me. Also, I was wondering how far I'd likely be able to drive after filling a tire with air if I had no means of plugging it at the scene. Thank you in advance for your thoughts.