the 49ers have won all their games since jimmy g. underwent injury. >> i am super impressed with how he has matured so quickly and i think it helps he started four years in college. >> you can tell, he's taken tens of thousands of reps as a quarterback. and that's , that's very helpful for him right now, and that's the reason he's been able to step in this late in the season and play at such a high level. >> the niners faced the raiders in las vegas, sunday, not sitting up for the silver and black, derek carr. steadam will star in his place. >>> still ahead, medical workers returned to get to the hospital, but a snowstorm was holding them back. >> on instagram, i said is there anybody who can pick up my coworkers and i from transit? >> that's what community does, and they got the help they needed. see more on their unusual ride to work. catch all our live news casts and news and weather updates throughout the day, find us on the free cbs news bay area >>> welcome back. all week we've been sowing you the snowy scenes of people buried in their c