This might be a little hard to do but since plug-in hybrids are here and will hopefully be a lot of there here soon I think the mileage logs should be updated to calculate in the electricity usage along with gas usage. That way we don't get the 230MPG Volt problem. I know I'm shooting my self in the foot when I say this but I think it will be better for everyone. I will gladly sacrifice my 299MPG for the greater good of the mileage logs. I have found that 33.6kWh per gallon of gas seems to be the norm on the internet. I have started to use this conversion in my spreadsheet so I can give people a more easy to understand number. I will however still say I got 299MPH to anyone who asks because its still true. I traveled 299 miles on one gallon of gas***. ***not including electricity usage.