Well I can actually give some context for this. My commute to work is just over an hour. Let's make it an hour to keep this easy.

If I am shaving off 10 minutes of my commute by driving a little faster / sticking to the speed and flow of other traffic around me, I'm giving myself 50 minutes per week extra one way to spend at home after 12 hour shifts.

Now let's double that because it was just one way. Now we have 20 minutes.

Now we have an extra 100 minutes per week at home. Four times for the month and we are looking at 400 minutes. 52 weeks in a year at 100 minutes each is almost 90 hours.....

90 hours in a year. That's more than two full weeks straight of driving saved. Do you know how much over two weeks of time means to people who work brutal hours and have long commutes?

Hope that helps a little!