The short answer is that you have slowed them up by 12 seconds.

They are important people - they drive cars - they don't have time to be out enjoying themselves on a child's toy. If you slow them up by 12 seconds, someone has to pay.

That 12 seconds was going to be spent talking to their kids when they get home. Now their child will go without meaningful parental contact for another day.

Or maybe they run a large company and that 12 seconds will cost them millions of dollars in earninings.

Or maybe ..... No. I'd better stop now. But one day, I'm going to find out why taking that extra 12 seconds to pass us is such a big deal.