In the late 90's, McLaren's main sponsor West did a series of track events in many european countries, using a rare two-seater McLaren Formula One car for demonstrations.

One of the F1 GTR cars was used in the events alongise the famous two-seater, with a special West livery based on their current Formula One cars.

For alex189's 1993 McLaren F1: http://www.gtainside.com/en/gta4/cars/66311-1993-mclaren-f1-epm/