[new peeps]

I think all of the ideas given would help to some degree, I ran into the issue with the hot garage our first summer after our house was built. Our 18' garage door faces North East and would heat up in the mornings and stay hot all day. So far I have had the ceiling above the garage insulated and I bought a garage door insulation kit from Romac and installed it. I also tinted the windows in the garage. The results so far as measured with a infarred temp gun before and after is about 16 to 18 degrees cooler from what I see. It is still hot, but cool enough that I have no more reservations on keeping the classic cars in the garage. Before that I checked on climate controlled storage.
I think the garage door screen and attack fan would work great but I was concerned about the dust that would be pulled in from all of the construction going on. The cost for the door insulation kit was about $200.00. Takes about three to four hours to remove the braces and install. Good luck on what ever route you take.