when coming off the freeway hot onto a service station/gas stop or rest area on a road trip, I'll idle cool the car for four or five minutes...I've seen the exhaust header red hot!

I've also chosen to just let the car idle while gassing up, lock the car with a second key in my pocket you darn betcha! Some of the newer cars won't let you run the engine with the gas cap off without setting an engine check code but I think the 700 series is ok with this. Also, the fuel fill is on the opposite side of the hot exhaust pipe so it's minimal risk. NJ won't let you do this because of their @#%#$% featherbedding law on pump jockeys (no self-serve!).