...There are cars out there with larger engines that get better mileage than many high performance bikes. Those who say they want mileage and high performance are usually just dreamers. Just because it has less than 3 liters and came from Japan doesn't mean it's going to get great mileage...
That I would doubt. Not calling you a liar, I just doubt it. My 'Busa could do 50mpg and at its absolute worst, 35mpg. The R1 never drops below 30mpg, and that's some high-RPM, ramp-roosting, stop-n-go riding. From what I can see of all-gas, compact sports cars, their real-world economy is ~18-24mpg (way south of EPA ratings, BTW).