Rally cars spend a good deal of their time drifting so the HB makes sense for them. Cars at Le Mans and other endurance races do not drift.

It’s used to ensure a minimum ride height is maintained. You can read more about it at http://www.formula1-dictionary.net/plank_or_skidb…

Ah - the Williams FW16 from 1994.

Since this is your opinion you obviously have zero clue about the history of the car. None what so ever. It was created 50 years ago (important point right there - 50 years ago) for the sole purpose of competing against Ferrari and winning Le Mans. That was THE only reason the car was built. A couple of years later it…