I bike about 18-20 miles round trip every day and I spend between an hour and an hour and ten minutes on the bike (total, not one way). I bring a change of clothes, lunch, and macbook in a waterproof backpack. Shower once in the morning when I get to work. I get my exercise and my commute done at the same time and I don't have to pay for/maintain/fuel/insure a car. On the off days that I don't feel like cycling or the weather is insane my wife drops me off or I get an uber.

This is my opinion and it may ruffle some feathers but if it takes you 10 minutes to go from door to door in a car and you don't have a disability, you shouldn't be driving to work. At least not every day.