Girls on motorcycles

I just flew back home from Los Angeles and on the flight I read a few chapters of a book and caught a movie.  I'm currently reading a novel called The Lock Artist and in the chapter I was reading today, the main character whisks away his 17 year old girlfriend on the back of his motorcycle.  I also watched The Kids Are All Right and there's a scene where Ruffalo's character takes his 18 year old daughter for a ride on the back of his motorcycle.