Workshop uses vehicle for private purposes

Servus people, some here in the forum may already know my history with my XCeed and workshop. The car is still in repair. According to the UVO app, the car was always at the same time from Wednesday to Friday (morning 7:30-745) and evening 16:50-17:05 “Sample driving.” I thought! Today I spontaneously looked in at the app and saw that my car is in a completely different place than it should. Quickly jumped into the car rental and to the displayed address g My “beloved” car stands there. 30s zone, residential area, everywhere houses, he stands parked on the sidewalk. Briefly thought and noticed that the “sample rides” from Wednesday to Friday (Sa,So he was not moved) seems to be the work path of the honored driver. Morning to go to work and evening home. Today, however, the car was driven at 20:30 a km and then at 20:45 two km, which is why I also took the “tracking hunt” on me and video and took photos of the place/car. Now the question: What can I do about it legally? Addressing the workshop types on it will not bring me any further. In addition, in my case a lawyer has been turned on (return from the purchase contract). I don’t want to do anything unconsidered and I don’t want to do anything at all!. Would the videos (KZ, car and place of residence shown on it) and screenshots (UVOApp with current location and time) if it gets hard as B Is there sufficient evidence, etc.? Lg.