The reply about dropping off information about your services and scheduling an appointment is great advice. As you said yourself, you know the owner is extremely busy. Too many times a salesman gets the cold shoulder in my shop because they were working by their schedule and not mine. There are enough problems in a day running a shop to ruin the schedule you had for the day. Throw in a sales pitch on top of that and your evening just went from hectic to an all out race to get cars out in a timely manner.