Motorcycles are very fuel economical compared to most cars, and a lot more fun too. More likely the motorcycle than the car will get filled if prices are very high.
Of course, but you're missing the point.
Economics is best analyzed by viewing things from an extreme perspective and then working back towards a more realistic scenario.
Would more people take a joyride if it cost them $1 or $100?
$2 or $50?
$3 or $20?
See where I'm going...?