3D laser profiling automotive applications include: reading embossed or raised characters on tires, inspecting for flush and gap tolerances and identifying surface defects and chips on brake pads, to name a few.
http://www.cognex.com/3D-displacement-sensor-laser-profiler.aspx?cm_campid=CBE3862F-9518-E211-AE9B-5EF3FCDAF1B7