My 19-year-old is in no rush to get her driver's license. I've had to learn to be OK with that.

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Getting a driver's license has long been a quintessential American milestone — right up there with prom, first jobs, and graduation. I remember itching to get mine, practicing in empty parking lots, and counting the days until I could drive myself to school. But things have changed. My oldest daughter, now 19, still doesn't have her license.