I'm surprised you still have to communicate your destination to the driver after you get in the car. Shouldn't Uber let you specify your destination in advance, entirely through the app?
Lesson learned: never tell your Uber driver your destination before you get into the car. :\
If I had other poor experiences with Uber, then I'd be faulting them... but they've done a good job making sure that hasn't happened more than once.
Most Uber drivers I see have GPS systems in their cars or one that I saw the other day had two iPhones.