Here the last vehicle I bought, my honda titan 150, its a great daily-work bike, especially because it runs either with pure gas or pure ethanol (thats why the two side pics).
It does about 73 MPG with ethanol, but im working on improve my riding skill to get more mileage (its my first bike) and I believe it can make about 106 MPG with gas, but i dont know yet because I havent used gas so far.
And still being so efficient its rather fast, making up to 75mph (depending on the wind, ground and riding position, power peak is at 65 though)