Driving home 20 miles on paved highway with just re-filled tank, no barbeque grill.

I'm having a Barbeque contest on the 4th of July between 3 of my freinds and myself. What should I make? I'm thinking some type of beef because I would like to have something with very good flavor. I'll be cooking with coal and redwood chips. Any suggestion would be greatly appreciated?
Thank you,
Maurice

I don't like the internal temperature method - the thermometer never seems to get quite up there until it's bone dry. I usually cook them for about 20 minutes at 400 degrees on the barbeque sound right?

If you have anything to add on how to cook better fish on a gas grill please let me know. Don't be dick.

I made hamburger barbeque today and put it in a bowl. I was going to put it in the fridge but I got distracted and forgot about it. It was on the counter for about 1 1/2 hours and wasn't warm anymore. I put it in the fridge but I don't know if it is still good.