???

I was very vexed and provoked in the elevator on my way home from work today. I read about this:

Cars that drive themselves – even parking at their destination – could be ready for sale within a decade, General Motors Corp. executives say.

I'm sorry, but why will we need to have cars that drive without us? Where will they be going? I didn't realize that all our traffic problems were due to a lack of drivers.

ZPJ assures me that I'm missing the finer points, but I have yet to figure out what they are.