Gas Savings Aren't that Much
With gas at $3.50 or more per gallon it may seem like you'd save a TON of money by getting a moped. I'm sure it costs a LOT to fill up your cars tank today. A moped certainly does get better MPG and would save you money on gasoline. But when you add it all up you may not save anywhere near as much as you think.
Lets look at an example situation: Lets say you live 10 miles from work. Your car gets 25MPG. A moped gets
Mopeds aren't free
A moped isn't an expensive vehicle but it isn't free. You'll have to buy the moped. In addition to purchasing the moped you'll also have to pay money to insure it. The moped will need repairs and maintenance. The total costs of buying the moped, insuring it and maintaining it could easily add up to more than the savings in gasoline.
Safety
No matter how you cut it, two wheeled vehicles are less safe than cars and trucks. The fatality rate is substantially higher in motorcycles. You're about 20 times as likely to die in a crash when driving a motorcycle per mile driven compared to a car. You may think that puttering around town at 20 MPH isn't dangerous but what happens when your tire blows or if a bad driver in a car changes lanes without seeing you?
Mopeds are Slow
You do know most mopeds are limited at speeds of around 35MPH right?
Consider a bicycle instead
You can probably buy a bicycle for around $100 or $200. It has no insurance costs. No gasoline costs. It has minimal repair costs.