[cobra de capell]

Could someone provide input as to how an Air Compressor & Air Tools would compliment working on a Cobra or cars in general?

I've been looking at securing some tools and I've noticed all the ads relating to Air stuff, but with no background or expertise in the mechanical area, I'm not sure that Air is the way to go. I realize that having Air to work with tire pressure and lug nuts would be a plus. But, are there other interesting/valuable uses?

Also, is there an idea tank size, etc. (or even brand) to look at?

Any input would be appreciated.