I recently joked that Philly Car Share was taking over Philadelphia, and that's before I realized that the nearest lot (or "pod" as they call them) to me now contains 13 cars.
When we got rid of our car it was largely a financial decision. We didn't really need it, and payment/insurance/parking added up to quite a large sum. Recently I thought about what I'd do if George Soros upped my regular payments substantially, and money wasn't an issue. I still wouldn't buy a car. They're a big hassle and I really just have no need for one.
