In this day and age when oil and gasoline are things to go to war over, and driving is something most people wish to avoid, I'm not quite sure why you are so eager for your precious child to take control of one of the most dangerous forms of transportation in the US.
That said, there are many reasons she might not want to drive, and, being 17, it is her choice to not get a license, and she will learn the good and the bad of it in her own time. Many people, especially here in Springfield, are going car free as much as possible, not only to keep in shape, but also to save money and help preserve the enviornment.
She doesn't NEED a license, and it is likely that she never will for her whole life. I agree that you shouldn't be her personal driver, and I agree that she will find a way to do the things most important to her. I will also say that in time she may desire that little plastic card and get it on her own, but until then, don't worry. And for goodness sakes, relax, and don't pressure her. This is the time in her life when she is supposed to start making her own decisions, and if you don't trust her with the choice between car, bike, bus, friend, or foot, then maybe she shouldn't be making the bigger, life-changing decisions that she will be forced to make in college.
P.S. I got my license at 19, right when I wanted to. *smile*