I've had 3 early appointments in the last two weeks that I required/indulged in taxis for. Yellow Cab was 3/3 in on-time pickups, and I appreciated that they call as they approach. The last driver, a female (1 of 2 I know they employ), even came to the door when I didn't answer. In some cities such consistent service might be standard operations, in San Francisco it's a downright miracle. \r
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