Edit: Note that I've just added a link to the full bike plan. I'm glad to have discussion about this issue, and those interested will find lots to ponder in the plan about the future of bicycle transportation and recreation in Raleigh.
Edit 2: Here is source for the above statement, and in context:
Bicycling is an affordable form of transportation. Car ownership is expensive, and consumes a major portion of many Americans' income. When safe facilities are provided for bicyclists, people can ride more and spend less on transportation, meaning they have more money to save or spend on other things.
* The cost of operating a sedan for one year is approximately $7,800 (AAA, Your Driving Costs).
* According to 2004 data from AAA estimates and US Census surveys, ownership of one motor vehicle accounts for more than 18 percent of a typical household's income.
* The cost of operating a bicycle for a year is only $120 (League of American Bicyclists).
Hmmm....Maybe the League of American Bicyclists has a closet full of swag and freebies that helps them keep their annual cost down.