Word of mouth, and industry reputation in your business will be important. Put business cards up on every bulletin board you see. Get to know the guys at the parts counter of autozone and tow companies (donuts help).
Road exposure is one thing, word of mouth and referral is another. They need to be able to see you, but they won't be driving by and stop on impulse (Honey, lets get a new transmission today). When they need you, they'll ask someone, you need to be first on the lips of who they ask.
Randy G
Metagistics Corporation