Quote Originally Posted by Mirek View Post
It's Correvit optical sensor used for measurement of absolute, longitudinal and transverse speed, distance and tyre slip angle from which many other values can be further counted.

Check here various versions with datasheets: https://www.kistler.com/cz/en/applic...sensors_csmota

That sensor has been used in the past and I have read a long interview with
Christian Loriaux

In it he said that the data gathered when testing on asphalt was fantastic "because the drivers cannot tell us" much useful.
However he went on to say that it was essentially useless on gravel where to paraphrase "too much is going on and drivers can "correct" for so many quirks" or "drive around" problems..

That car do not look to be going particularly vigorously....driver? or car?

Who can say?