She's mastered the parking lot. She's ready for the road. A small road. A quiet road. Maybe a residential street with a few slow-moving cars. When she's got this down cold, it's time to move to a busy street with traffic lights and pedestrians. And then to a street with more than two lanes. And then to a highway. (Warning: merging with highway traffic will freak any new driver out. It freaks a lot of practiced drivers out, too, apparently.) Get each degree of difficulty down cold before moving on to the next level. It's like a game of "Candy Crush" -- it's all the same stuff with a few new obstacles and a higher level of difficulty. And later, she can tell all of her friends about it on Facebook. If teenagers even use Facebook anymore, that is.