You may soon pass more scooters on the road. Rising gas prices have more people choosing two wheels over four. That's driving buyers to dealerships in search of scooters and small motorcycles. Sales of name-brand scooters like Honda, Suzuki and Vespa were up almost 24 percent in the first quarter of this year. But now you might have some trouble finding a one. Some dealers are having difficulty keeping more than a couple of scooters in stock. Depending on the size of the scooter, you can get anywhere from 40 to about 120 miles per gallon.