Forgot about the sweet tins - I have five of them (XJ220s & McLarens)I have a Gulf McLaren sweet tin. And a Jaguar XJ220 sweet tin... And various other McLarens and Porsches. And a couple of NASCAR sweet tins. Not quite die casts, but they're good fun.
Most of my motorsports die-casts are F1 and BTCC, with some older Group C stuff - Jaguar XJR-9s, assorted Porsche 956 / 962, plus a Rondeau, a Nissan and a Toyota.
And a 1/8th scale road version of the XJ220
And some F1 1/43rds
And a BTCC Volvo Estate (NOT the original valuable one)
And a set of 3 miniature Peugeot 908 sportscars