In summer, biking is the fastest option at 10 minutes. Well, actual road time is the same as a car (I sometimes get caught by all the same lights as coworkers driving a similar route). But in order to match the bike time to the car time, I'd have to pay $200 to park in the same parkade where I have a free bike rack. Additionally, most of the car stalls are on lower levels, so I get a time advantage in getting to my bike and getting it up to the surface.

The bus isn't terrible. In winter, the bus is pretty similar to the bike (15-20 minutes), except that it's unpredictable when it'll come. Leaving at exactly the same time can give me anything from "walk straight onto the bus" to "wait 15 minutes and be late for work."

I can also walk in 30-35 minutes.

I'm about 2 blocks from a proposed light rail route, to be built at some point in the next 6 years, which might be faster. However, I intend to move in 3-4 years (once my wife is finished law school), so I may never get a chance to compare those options for speed.