Fingers x'd you get it back...
I had a similar thing happen when i was working in my driveway and a guy came up and asked if i wanted to buy a ke70 with a 4age in it. I just shrugged and said i'm not sure what that is, and he went to open the bonnet of my car and i said i think you should leave now.
Sure enough, a fortnight later he came back and broke into my garage. Nothing was taken fortunately, and tbh I wouldn't have known anyone was there but they propped up my roller door with a broom. Sure enough his car was advertised on gumtree and I called the police
They were able to use his mobile records to put him at my place and hence charged him to which he pleaded guilty.