The International Alpine Cup is one of the most important car races of the time and so demanding that it put engines (and cameras) to the test. The second edition took place from 7 to 11 August 1929, over a course of some 2,770 kilometres divided into five stages, between Germany, Italy, Austria and Switzerland. FIAT, after a long absence from major international competitions, took part 'with a team made up of its best men and with its latest type of construction', the new FIAT 525 SS model, i.e. the Supercompressed Sport version. The press of the time highlighted how the Fiat 525 SS was able to hold, on the Pordoi Pass as well as on the Giovo, an extraordinary average of over 50 km/h. The FIAT 525 SS's 3739 cm3 six-cylinder engine produces an impressive 88 hp, allowing it to reach a top speed of 120 km/h, also thanks to its special lightened bodywork. This model is distinguished by its beauty and elegance and will soon be 'the dominatrix of speed' in races, winning numerous of them, but not this one although it is still in its infancy but already a protagonist (it will triumph next year). And it is indeed a challenge for Bruno Magri, our filmmaker who wants to take home a memory, to effectively capture the movement of these racing cars that defy physics between one Alpine pass and another, no less than seven in the Merano stage on 10 August. The roar of the engines breaks the silence of the valleys and in an absolute sense is synonymous with power. We don't know what model Magri's 16mm camera is, which if anything is much quieter: soon, however, people will begin to say that cinematography is the strongest weapon. Certainly, amateur cinematography is, once again, the weapon of memory.