http://statastic.com/category/economics/negative-externalities/


Why Cyclists Should Love Shared Cars
Thursday, September 7th, 2006
Car-sharing is gaining popularity in cities across the United States. The idea is simple: car-share companies or cooperatives park hundreds of cars in convenient locations that any member can rent by the hour. Most car-share programs cost about $8 to $12 per hour, including gas, insurance and maintenance.
On the face of it, car-sharing is a economical and eco-friendly way to get around. Zipcar has about 40 members sharing each car in their national fleet. That’s certainly better than 1 car per person, right? Perhaps. If your goal is to reduce the total area dedicated to parking a vehicle, it does indeed free up valuable urban space. If, however, your goal is to reduce traffic congestion, smog, or reliance on fossil fuels, the jury’s still out.
Car Sharing Increases Mobility - and Traffic - Amongst Urbanites

D: lotsa pretty charts that break down the numbers.

Car sharing could make suburbs semi-viable.

Tree hugger had rebuilt burb streets last week.
It introduced carsharing and communal aspects into cul-de-sac culverts.