I saw on the Guinness site that the Jetta TDI is the "record holder" for fuel economy. I also saw here on PC that a civic hybrid did much better in a 50 state trial, but the Guinness site still rates the TDI a record. Is there some reason that someone here couldn't certify a record to unseat the TDI as "mileage champ" on the Guinness site? I suspect sponsorships wouldn't be too hard to obtain : Toyota, Michelin LRR tires, a gas company, etc. Has anyone tried? Is there some prohibition to "hybrids"?