Battery powered bikes are all the rage and they're great for commuters who want to save money. As some of you listeners may know, Clark often rides a scooter to the studio. He gets more than 70 miles to the gallon and goes around 45 miles per hour. But the scooter still runs on regular gas, which can be expensive. By comparison, electric bikes go 20 miles per hour and they retail for around $700-$800 and up. They're very silent, except for the whirring of the electric motor, and go 30-40 miles between charges. They're nearly pollution free, but you are exposed to the elements. Still, they save a ton of money and are a viable option if you have a commute that's less than 10 miles. Clark admits that the electric bike trumps his scooter for savings. On a related note, Clark wants to warn his listeners that gas-additive scams are back full force. These scams involve people trying to sell you pills and potions for your fuel tank that promise to stretch your gas by 30 percent. The claims are bogus. It is only natural that as we pay more for gas we want to believe there's a way to recoup the extra expenditure. But don't make the bad situation of paying for more expensive gas worse by losing money on these gas-additive ploys.