Certainly they do, but of course, they would think so. Still, I'd argue that this is not even that crazy. At least in San Francisco, I vastly prefer to ride with just about any colleague I've ever met than the local taxi drivers, based on these criteria:

- comfort while riding (lack of abrupt motions requiring me to brace myself)

- courtesy to other drivers and pedestrians

- actual number of traffic accidents (colleagues: 0, taxis: 2, although fortunately both accidents were mainly property damage rather than serious injury... but still)