If you live in San Francisco and you haven’t tried UberCab yet, do it. The service, which we first covered in July, eliminates everything bad about a taxi experience. In my order, that’s flagging one down, finding the cash to pay, and being in a sometimes disgusting car.

UberCab contracts with black car services – mostly Towncars and Escalades. There’s a lot of unused inventory in those businesses and they are happy to work with someone who eats up that inventory. As a user you download an iPhone app (I have it on my iPad) and add your credit card information (that’s the last time you ever have to deal with that). When you want a car to pick you up you hit a button. The app knows where you are and finds a car and driver nearby. The driver accepts via his/her own iPhone app, and you then get to watch them come to you on a map with a pretty darn good estimate of the number of minutes it will take for them to get there. When they arrive you get in the car and tell the driver where you want to go. When you get there you see the charges and accept them, which are then billed to your credit card, tip included. A receipt is emailed to you. And then each side gets to rate the other – I love the fact that the driver rates the passenger, too. Makes for good tips and a happy overall transaction. Watch a demo video here.

When I tried UberCab a few days ago I had to wait just 5 minutes for the car to arrive (a big Mercedes), and the overall experience was way better than a taxi.