This looks like a great tool. I think changing the domain name might be a good idea since some people may not infer that mylpg = miles per gallon.
nitpicking: mylpg = my Liquified Petroleum Gas, as this is a site for lpg-fueled cars. Also, given the context of the site (x stations in Europe, .eu TLD), it's unlikely he'd want 'mpg' in the domain name as Europeans don't use miles or gallons.