@Tits Mcgee, I think it would be easy to justify spending well more than 1.5% of the budget on bike infrastructure, even on the mobility grounds that you bring up. Why should semis and delivery trucks be stuck in traffic jams caused by people driving their kids half a mile to school? Or driving alone to work? Basically, we are making completely inefficient use of our public right-of-ways because so many trips are being made in a 2-ton, 6' X 12' vehicle. And as we know, at least 40% of passenger trips are under 2 miles. Upgrade the bike infrastructure and you can start to switch those trips over to bicycle, and voila, you have faster trips for those in which driving is really justified, and all the reduced externalities as well. A bike lane is estimated to have 5 times more capacity than a motor vehicle lane.