BEWARE of zipcar. DO NOT use this if you need a car asap.
Nowhere did they mention I had to wait a week before being able to reserve a car. It wasn't until after I had to pay the hidden $50 annual membership and $25 application fee that THEN they told me I had to wait a week.
I even tried calling the local offices here in Pittsburgh but they all went straight to answering machines. Without so much as a callback.
Anyway ... I thought zipcar had a good idea but not anymore. I'd rather use other methods of transport. Thank-you.