What it will be like to have Alexa or Siri drive you home

The car was once a physical embodiment of freedom and liberty, allowing us to drop everything and take to the open road. Today, it's a symbol of oppression -- a mobile prison cell where drivers "do time" as they sit in traffic on their daily commute. Over the next decade, this may change: Self-driving technology will allow passengers to focus their attention on other tasks. That same commute could become a source of great excitement, a private moment in the day for work or pleasure. There are still technological challenges to be overcome before self-driving vehicles can be allowed onto the streets.