Too much automobile technology here:
You are better off driving a manual transmission with a clutch pedal, and using a $15 floor style bicycle pump w/ air gauge to maintain the tire air pressure. It takes about 40 pumps to raise a car tire up from 25 to 30-psi, and pumping it manually gives you a much better appreciation on tire traction than an inflation system.
Tapping the inflated tire tread hard with a hammer is also a good test for tire inflation without using a gauge and is easier to do in the rain or in the dark.
And, a manual transmission gives it a better grip on the snow.
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... down and out, liv'n that Walmart side of the lake!
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