An Ohio couple on their way from SFO the Mark Hopkins Hotel died in yesterday's taxicab crash at the Mariposa Street off-ramp from 280. "The woman was pronounced dead at San Francisco General Hospital shortly after the crash, and the man died at about 4:20 p.m., " reports CBS 5. The driver was also seriously injured "but left the hospital Monday afternoon." The cab, according to CHP Officer Shawn Chase, "smashed into a highway support beam and the taxi caught fire" after the vehicle's brakes failed.