R1 rings a bell.

That's the thing about motorbikes in general - the fuel economy is fantastic. Even if you push the thing hard you'll get about 50 miles to a gallon, and although the tank is small (they hold, what, 15 litres? 20?), you'll get 300 miles out of them at least. My Dad's worked out that with a bike, he'll save over £120 a month - he currently drives a P reg (1997) Saab 9000 CSE Turbo (might be the CS, actually. Either way it's a petrol Turbo with an automatic gearbox), which does 30 mpg if he drives it softly, and he's not someone who drives cars softly.