45 Minutes I'll Never Get Back

I don't really understand why, on roads that look like this:

it took 45 minutes to drive less than a half mile from my house this morning. At that point, after working on The Olive Garden Scarf for much of that time:

I turned around and worked from home for the morning. Seriously--the only snow in sight was on the hood of my car, and there were no signs of an accident in the limited ground I covered. Can't wait for tomorrow's commute, after more (but still not very much) snow and an overnight freeze.