The battery shape in the Ford is thin and flat and about 3 feet square, and only about 4 or 5 inches deep. I thought an electric blanket would be a good solution for this, but I don't know the shape of yours.

What about a thermocouple device for the exhaust?

One problem in the ethanol production industry is:
Yeast make heat. Lots of heat.
So much, you must artificially cool the brew, otherwise they will cook themselves to death in just a few hours. We use evaporative cooling towers... swamp coolers to do this... and expend millions of btu to the atmosphere each hour.
Then, on the other end of the plant, you need to burn fuel to heat the brew, to distill the ethanol. We literally have 2 million gallons of 93'F brew on one end, and need only 100 gallons per minute of 180'F brew on the other end.

Seems to me there should be a way to convert Millions of gallons of 93'F "water" to a few hundred gallons of 180'F "water" without the use of fuel.
Any ideas?
Other than that, I also thought some sort of thermocouple device could help chill the 93'F brew, ( less demand on cooling tower ) and make some electricity to run plant motors at the same time.
Kind of like you could use a thermocouple on your tailpipe to make electricity for your hybrid, but it may be a trivial amount. ( probably )