Portable air compressor plugs into cigarette lighter

K Charles wrote:
You can blow out the lines with a bicycle pump. Even if you don't think that will work, which it will, it will be good enough to get you home.

No. More like push some of the water out of the lines with a bicycle pump. To really "blow" out the lines you need a much higher continuous flow of air. But I agree it may be enough to get you home. Remember PEX tubing is resistant to freezing anyway....