He might be the only New Yorker who welcomes people to graffiti his car. Artist Philip Romano, 20, covered his 2004 Hyundai Elantra in a chalkboard coating and invites strangers to draw on the ride.

I became fixated with chalkboards at an early age, when a neighbor gave me a chalkboard easel her children had outgrown. With that dusty board, all I had to do was add a swirl of imagination and my ...