Details are pretty sketchy at this point, but this is what CBS 5 had to say about the carnage:

Muni spokesman Paul Rose said the 43-Masonic bus hit a car making an illegal U-turn near the intersection of Fell Street and Masonic Avenue around 6:20 p.m.

According to witnesses, the bus pushed the black Volkswagen sedan for nearly a city block to Fell Street, where it came to a stop in the park.

Witnesses said the driver either lost his brakes or may have suffered a medical emergency. The bus driver was taken to the hospital, while the driver of the car was able to walk away from the accident. No passengers on the bus or any pedestrians were injured in the incident.

[Photo by mom_shorts]