Quality car tire pump

[TheTominator]

[quote RAMd®d]I use a double cylinder bike pump that pushes are on both the up and down strokes.

Slow and tiring
It builds character.

[Mac1337]

[quote mjgkramer]An alternative is to have an air tank that you carry in the trunk. You can buy a tank with hose, valve and gauge installed or buy a hose, valve and gauge and install it on a surplus freon tank. You can pressure them up to 125 psi or so and they fill a tire as quickly as a full blown compressor.
I am intrigued by this option. So you can take the propane(you said freon but I don't know what that is) tank to the gas station and fill it up with air that way? What kind of fittings do you have to attach to the tank and how?