32F (or 0C for you in USA state #51) should have no affect on the batteries. besides, they ride in the backseat & are comfy.

it's the -45F that i would worry about. (-49C). that's the temperature limit usually of commercially designed products.

while i suspect that low temps have already been considered by honda & toyota (who know's what ford or GM think about), you get too low & batteries just stop.

--- i missed out on some really great sunset shots of the grand canyon once becuase my camera battery just died as it got colder...

see ya