I had a client once return while I was working on his car and warn me there might be some illigal substances stashed in there (weed). "My friends like hiding their stuff in my car." He was concerned about my shop calling the police if we found anything.
I told him not to worry about anything. Never found the stash, either.
I could really care less about what people do in their free time, but if it's something you are morally against, HMAD, I believe smashing it like you did was the best option. I saw Dog the Bountyhunter do the same thing one episode.
