Ceiling fans are a BIG plus. Not all garages get air moving around so fans are the next best thing. I use em in both the warm and cool temps. Make sure you get the ones that can be reversed. Then put 'em where you'll be working such as close to a bench or your prime car locations.
I used a big ol lug nut from a race car to make sure I can snag that chain to change the speeds easily. Then I got a little crazy and painted flames on each blade of both fans.
And hey, good luck there!