This one-off Bertone prototype was dubbed the Spider America and presented by the coachbuilder at the Turin Auto Salon in late October 1957. As documented by a detailed report, including a copy of handwritten notes by Nuccio Bertone himself, in 1957 the designer acquired a Fiat 1100 TV (Touring Veloce) that was factory-uprated to 1200 specifications and then modified by Stanguellini for greater chassis performance. Under commission number 8900, the car was labeled as prototipo 8901 and clothed in completely unique bodywork styled by the renowned Bertone designer Franco Scaglione.