If you are commuting by car right now for 5 miles or less, you can afford a bike to make the same trip on. The reality is that gas has gotten more expensive and the savings of riding a bike even for short trips adds up.
Let's look at some numbers.
The Supplement Scenario: Here we assume that a bike supplements a car that you plan to keep and drive, and that the savings of riding a bike will come purely from saved case. Using an online calculator, you can quickly estimate your annual fuel cost for a trip. If you travel 1.5 miles each way, 5 days a week, 50 weeks a year (you take some vacation, right?), that's 750 miles per year, spent on that short commute. If you get 20 miles per gallon and gas cost $4.00 gallon, then your cost of gas for that commute is $150 for one year. For five years that's $750.
