Science Fair Project Ideas?

Got a minor dilemma ya'll. Science fair is coming around pretty soon and the date that we were supposed to give our teacher our topic that we had chosen to experiment on was today. So i was out mud riding all weekend and obviously didnt get this done. I want to do something involving my truck in some way. But I dont have any good ideas. I was kinda thinking of doing like the aerodynamics of the tacoma with the tailgate down vs tailgate up and the effect of that on mpg, but i really didn't know how to test that. Any ideas would be appreciated. thanks fellas.

 

lol.... just google mythbusters truck tailgate test episode. They already did it, can't be too hard to copy.

 

http://www.youtube.com/watch?v=r3aqHbD-O9E

 

See if you can make it stop running. . .

http://www.youtube.com/watch?v=xnWKz7Cthkk

 

REAL gas VS ethanol--How many more MPG with 100% gasoline.
Costs and Use of oil to prodce ethanol-COST EFFECTIVE-Not from my research.
HAVE FUN!!!!
Kids project--parents project--Been there!!!