2:30 PM UPDATE: SamTrans bus collided with 16 vehicles at 11:50PM. 4 people taken to SF General, including 1 in critical condition. Cause of collision is still under investigation. Witnesses tell NBC Bay Area the bus was traveling pretty fast when it lost control, went over a curb and crashed into cars and shopping carts. -------------------- #BREAKING Samtrans bus slams into multiple cars in the parking lot at the Serramonte Shopping Center in Daly City. So far, 4 people transported to the hosp