I have to wonder about some of their numbers. I can't for instance see motorcycles getting better mpg than a typical hybrid. I've owned a good many motorcycles over my life, and the only one that'd get close to 50 mpg was my first 305 CC Honda, back in the '70s.
Then there's the cruise ship, which if you think about it gets 0 mpg. You get on it, stay a while, it burns a bunch of fuel - and when you get off, you're right back where you started :-)
|