What about a smartphone app that helped you avoid the most congested roads. I think Waze does something like this today and I'm sure that Google Maps can as well. We just need to have it integrated into the system so that we don't have to think about it.

I think this is where projects like Andriod Auto & iOS CarPlay come into play. Just jump into your car and say "Take me to Julia's house" and the route will be mapped out for you. I would love to not have to figure out the best way to get to the mall on a busy Saturday afternoon! Even better, an auto-driving car will actually take care of the moving bits as well as planning your route.