Every car in this Sicilian rally has its top down. The sun is present, the roads are scenic, the event is a procession rather than a race — the conditions for open-air motoring are as favorable as they ever get. Number 2, a Mercedes-Benz R129 SL in dark navy, is running with its soft top raised. This is either a statement or an air conditioning decision, and on balance it is probably both.

The doors open upward because they had no choice. The 300 SL’s tubular space frame — the structure that gave the car its extraordinary stiffness-to-weight ratio and allowed the lightweight body to be hung around it — ran high along the sills, creating a structural barrier too tall for conventional door openings. Rudolf Uhlenhaut’s engineers solved the access problem by hinging the doors at the roofline. The solution that looked like showmanship was engineering necessity, and the car that looked like an Italian dream was actually a German calculation.