Cars Slowly Going By Friend's House

My friend who I've had since age 15 wrote to me recently and said since we last wrote and I published his comment, he's had cars driving slowly by his house.

I asked him if he's playing around, or serious.

He'll let me know. I wouldn't be surprised though. Anyone vouching for me, with credibility, would probably be a subject for someone's private investigator work. They might want to assess his income, where he lives,his profession,and find things out to try to discredit HIM if he seems like someone who could cause anyone damage by stating he believe in me because he knows my mental state, character, history, and personality, like no one else.