RS 002 Quattro Group S Prototype
Group S was going to be the replacement of Group B rally, however it was scrapped along with Group B in 1986. This was Audi's proposed attempt at developing a Group S rally car. It's the sole surviving prototype they created, only re-introduced to the public last year.
More information about this car here
Goodwood Festival of Speed 2017
Goodwood, West Sussex, United Kingdom