I leave the camper on my truck even when I go 35 miles to PIR for a 6 hour Wednesday night race. It only makes about 3 MPG difference and I don't have to walk a 1/8 mile to the cans 20 times a night. I'm not 25 years old anymore.

Plus if it's hot out it's nice to go in the camper once in a while to cool of with the AC.