<prompt> Nyorai kupfuurira kweiyi ndima - Mwaka we1959 Grand Prix wakaona Shelby achityaira Aston Martin DBR4 muDutch Grand Prix muna Chivabvu, ichiteverwa neBritish Grand Prix kuAintree muna Chikunguru. Shelby akabva atyaira muPortugal Grand Prix muna Nyamavhuvhu, achiteverwa neItaly Grand Prix  <response>: muna September. 