Gas taxes and other fees paid directly by drivers cover only a bit more than a third of the city???s transportation budget, the rest of the money comes from taxpayers regardless of how much they drive. (see <a href="http://www.portlandonline.com/omf/index.cfm?c=57785&a=383750)">http://www.portlandonline.com/omf/index.cfm?c=57785&a=383750)</a> Car crashes are the leading cause of death of Americans under age 35.