Solved! Keep your battery warm all winter.

[anthony]

Warning, may cause ridicule and alienation.

From here:
Knit VW New Beetle Convertible is a real stitch - Autoblog

 

[mknox]

Nice. My mind went straight to some kind of in-floor radiant heating system in your garage

 

[Alfafoxtrot1]

And, a very elegant solution to the front license plate mount, as well!