The Supersonic design first appeared on a Conrero-tuned Alfa Romeo 1900, which was entered in the 1953 Mille Miglia.
Designed by Giovanni Savonuzzi, the body was crafted in metal by Ghia.
The car was just partly an Alfa Romeo, only the engine came from the Alfa 1900, which had been tuned by racing driver Virgilio Conrero.
Ghia's designer Giovanni Savonuzzi, who previously worked for Cisitalia, had manufactured his own chassis with a Fiat 1400 front axle and a rear axle coming from a Lancia Aurelia.
Unfortunately, the car didn't cross the finishline in the 1953 Mille Miglia.
The body had been heavily damaged in a crash.
Conrero restored the chassis and rebodied it with a barchetta style body.
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