Car is fastest.

My commute is from 17-22 miles.

By car it's 30-45 minutes.

By Bike it's 55-70 minutes.

But as swwhite said, then I would need ot go to the gym for an hour. By bike it's home, shower, dinner, free time to do as I please (or as the wife instructs).

I don't think commuting is a time issue, to me it's more of a lifestyle statement.