Let's meet the Taylors:
About the Taylors
The Taylors are passionate about fuel economy. They have two companies, Fuelacademy and Eco2driving whereby they run global education programs, teaching drivers how to reduce their fuel consumption, reduce CO2 emissions, save money, drive smarter and safer. Between them, Helen and John hold 88 world records of which 42 are for fuel economy.
Forty-two records for fuel economy? What the heck is that? What are their other 46 records? Feats of excess and unnecessary driving? Most congestion caused due to driving slower than traffic? Here is a link to their all of their world records, which are apparently adjudicated by FuelAcademy, which is the Taylor's driving business.
I'd also like to point out that they aren't any tips or tricks for saving fuel actually listed on the Smarter Driving Tour webpage. You have to go to the Smarter Actions page here, which just restates what the federal government says here.
Anyway, if you want to save gas, drive less. That's the best way. But I don't think you can get any records for it.