Bike v. car distances

Distances travelled from 1 Jan to 27 July, 2008:

By car, 2767 miles, 4427 km
By bike, 3234 miles, 5175 km

I thought driving the family to Stockholm for vacation was going to rack up so many car miles I wouldn't be able to bike my way out of it. I had even planned to divide that distance among the four of us.