[mpgx2]

Ok... you trumped me on the maths.. lol

If I ever get my car running on vapour (which I am putting
a lot of time into) then I will be quite happy to use the 60L
fuel tank for water and have a 1.5 gallon fuel tank for the
400 mile range.

Also, I've worked out that there is extra space under the
front wings over the wheels for extra water tanks that
won't be seen.

Thanks for helping out with some equations... :-)