On the way home from Seattle, I stopped at one super busy gas station. All the pumps were busy and cars were waiting in line. I looked carefully at the pumps and found a green pump unoccupied on the far side. Assuming it was a diesel pump, I drove around all the waiting cars and pulled in. I got out of the gladiator to start fueling up and I hear someone yelling. I start opening the filler cap and turn towards the pump and the yelling is louder and more persistent. The gentleman in the car in front of me is desperately trying to get my attention. He yells at me "hey - thats diesel!" It didn't register in my mind, I think "of course it is..." He yells again "thats a diesel pump." Then I get what he's saying. I continue to get the pump ready, and reply to the guy "this is a diesel" as I point to the gladiator. He had a very skeptical look on his face. I think he thought I was lying to him. He replied "that's a jeep!" - "its a diesel?" I started fueling up the jeep - that guy gave me a look of disbelief. It was so funny. I am positive he thought I was an idiot filling a gas jeep with diesel