Next time on his way to work just have him look for commuters (though I am not familiar with his area). I really didn't notice people on bikes until I became one of them. I notice people riding all types of bikes now and usually give them a nod when i'm out on my rig. And definetely when you have a chance take him out for a spin on one of the bikes your building for him. It's one thing to see someone do something, and another to actually do it yourself.