Hmmm... By car, obviously variable by traffic: I'm around 20mins on the low end and 40 min on the high end (most often at the lower end - especially in the morning) each way.
By bicycle: I'm around 45 mins if I take it easy (35 if I push but then I'm sweaty) and it's about 50% bike paths.

2.25 (best case car) to 0.875 (best case bike)
I wouldn't claim the 35 min on the bike as fair as I'd need time to clean up when I get to work. I'd fairly peg it closer to a 1.8.