[brucepick]

Sounds great!

D**n! The 9/18 date conflicts with a camping trip that we set up just yesterday evening.

Any chance of running it one week earlier or later??

With gas and diesel cars having a wide range of mpg capability, I'd suggest scoring by % increase over the EPA combined number for each car. If anyone shows up driving a Geo Metro or a 1st Gen Insight, nearly any other vehicle might as well pack it in. I admit, correctly chasing down and verifying the EPA number for each car can be time consuming. You can demand that entrants provide a print of the car's page on the EPA site and mark the info on the page that defines their car (tranny type, engine model, whatever).

Classing bikes by cc might be best, if there are no EPA estimates to go by.