Here are two easy things to do during the interview process to build a relationship. One is having a handout for every applicant with why the dealership and its culture are great. Have a listing of employee benefits, ways you serve the community, and most importantly compliments for your staff. Descriptions of ways you reward the best employees.
The second way to turn, what can be a very nerve wracking experience, into a positive is a small gift for every applicant that interviews in person. A simple one is a free oil change. Tell the interviewee that you want them to fall in love with the dealership experience before they even come to work there. Even if they don't end up joining your team, they will be ambassadors for you in the community.