My older son was pretty ambivalent about it, he finally just got his license at 17.5 years old.

My younger son just turned 16, he's a little more motivated to drive.

A few weeks back I overheard them talking to a female friend who must be around 17-18, and I heard her say she has her license and drives her older siblings who don't have their licenses around!

So yes, I think this is becoming more common.