https://www.youtube.com/watch?v=ySL3_f0cWcw
My company used to design and manufacture a range of servo-hydraulic damper test, 4 post and 7 post test rigs for the F1 industry.
The first system we supplied was to Benneton back in the Active Suspension era and supplied then Arrows, Ligier, Lotus and Ferrari as will as Citroen for their Paris Dakar programme.
We could input road/load data from different circuits and vary downforce to model aerodynamic changes.
The vehicle tended to be fully instrumented and we had around 160 channels of data logging.
The final systems we manufactured used 32 bit digital controllers and were quite well developed.
I was in charge of Sales and Marketing and we sold this business in around 1998 and moved on to other engineering work. I am sure that these types of system and now much more commonplace and much more developed.
They really are an invaluable tool.