heres a lil something i started doing a few years back... When i see someone somewhere that looks like they dont belong or could be an issue... such as big as donks in a lot full of tuners... i snap a cell pic. lisence plates mostly, with the rear end to include tails. Make model color year and tag, all right there. takes bout 5 seconds and can be done on the DL. I have probably taken 20 or 30 pics in the last 3 years... never needed em, but if i wouldve... id a had em. Makes life alot easier.