BRM P48/57

Here's a photograph taken in the paddock at Aintree during practice for the 1961 British Grand Prix.

It's Graham Hill's BRM P48/57, the interim car, based on the 1960 P48 and fitted with a 4-cylinder 1½ litre Climax FPF engine that the team used until the P57 with the BRM V8 engine was ready. Graham Hill qualified in eleventh place on the grid but retired after 43 laps with an engine failure.