Notes:
A well-known racing driver from Florence, Italy, Roberto Barsanti managed a garage in his hometown, in Via degli Artisti, which soon became a meeting point for a number of motorsport enthusiasts and young racing drivers from Toscana region, including Count Giulio Masetti and his brother Carlo Masetti, Emilio Materassi, Renato Balestrero, Marquis Paolo Niccolini, Clemente Biondetti, Ferruccio Zaniratti and Count Gastone Brilli Peri.

On Monday, 13 June 1921, Roberto Barsanti took part in the Chilometro Lanciato - flying kilometer - event held on a street course at the Cascine Park in Florence, which was part of the Coppa delle Cascine race program. Barsanti drove an Isotta Fraschini modified by himself in his garage. The vehicle was equipped with an airplane engine capable of developing 150 bhp and sported the number 1E in that event - 1 was the car's race number and E the class, for vehicles with engines over 4500 cm³.

During his last passage over the timed section on Viale della Regina (now called Viale George Washington), Roberto Barsanti lost control of his car just in front of the Cascine hippodrome grandstands, probably because the left chain drive suddenly broke. While running at about 150 km/h, the Isotta Fraschini swerved on the right side and crashed head-on against a large tree.

Roberto Barsanti died at the spot, whilst his riding mechanic Carlo Galli sustained leg injuries from which he would later recover. Several spectators were injured when hit by debris from the crash, one of them, P. Piccini was also taken to Vespucci hospital in Florence.

After the accident the event was not stopped. Paolo Niccolini in a Fiat was the wiiner overall.

Roberto Barsanti's son Mario would follow in his father's footsteps, embarking on his motorsport career. He became a popular motorcycle rider and car racer. Sadly, sixteen years after his father's death, also Mario Barsanti would perish in consequence of injuries suffered in an accident at the Livorno circuit, on 14 December 1937, when his car crashed during a test.

• Book "Settant'anni di gare automobilistiche in Italia" by Emanuele Alberto Carli, Automobile Club d'Italia-L'Editrice dell'Automobile, Italy, 1967 [incorrect name, date of accident and of death].
• Book "Albo della Gloria: Al Piloti Caduti in Tutto il Mondo al Loro Posto di Combattimento", by Emanuele Carli, Modena, Italy, 1972, page 59 [incorrect name, date of accident and of death].
• Newspaper La Stampa (Turin, Italy) issue of Tuesday, 14 June 1921, page 2, article "Acccidente automobilistico alle Cascine. Un morto e un ferito", retrieved by website http://www.archiviolastampa.it/ [incorrect surname: Barzanti].
• Website Gdecarli.it by Guido de Carli, chapter "Circuits", page http://www.gdecarli.it/php/index.php?var1=1&var2=2 .
• E-mail by Francesco Parigi, dated 15 August 2011.