I think it has good potential for info on how to save money etc on gas, petrol, diesel, etc.
I would say low XXXX if you can find the right buyer, XXX to a domainer.
Has a market in Hydrogen and alternative fuels. Plenty of people adding hydrogen kits to cars. $xxx to end user as these guys aren't rich doing the installs.
I think the name is okay, it has a clear purpose and the TLD fits. But my opinion is that it should be developed. It doesn't have much resale value. It is good for advocacy purposes or fuel-saving tips but I don't think a business is going to buy it. Good luck.