Fuel price rise is a great excuse to convince you loved one about buying a bike, but is it really a good investment? I guess that compared with those american gas-guzzlers like Chevrolet Tahoes and Suburbans they are. A regular car may drink about double than a middleweight bike, and slightly more than a 750 and up. If you count the buying price, the insurance, the maintenance and the riding gear, how long does it take to reach the break-even point? Say that a regular car needs 2 more litres per 100 km, 2 litres is about 2 euros. A new middleweight bike (3000 euro), full riding gear (700-100 euro), insurance (300-500 euro), that makes a total of 4000-5000 euro -if you don't have to rent a parking-. That would mean you have to do 2000 times 100 km (200.000 km) to reach the break even point. My car is 5 year old and just recently crossed the 100.000 km, so in my case I would need 10 years...