gas station air pumps

Thanks for all the replies. The truck stop lanes seem the best when traveling. I do have a 110V air compressor ( 3 gallon 100psi 1/3 HP Harbour freight) which i run off my invertor if needs be, but find it takes a long time after about 66 psi but glad to have it as it has got me out of problems even if taking a long time.
Good to read the types of compressors other people use and wish i had brought a 135 psi model now