Back about 1964 a couple of years before I could get a license my cousin who I was staying with rode me on the back of his Harley from Port Washington WI to Milwaukee, WI. and that was all it took. I knew then that a car was not going to be my form of transportation. Had two motorcycles before I ever bought a car.
I still ride with that cousin who is now in his early 70's and me in early 60's, except not on the back like in 1964. Sometimes it just a simple ride that you give to a relative, neighbor or whoever that sparks that interest that we all know.
So remember, give a kid a ride and you may just ride with that kid 50 years later!