00:50Sporting WitnessAyrton Senna and Alain Prost: Formula One's Greatest RivalryBBC World Service Duration: 9 minutes Wed 25th Oct 2017, 00:50 on BBC World Service East and Southern AfricaAvailable for over a yearListen nowHow the feud between two motor-racing giants spilled onto the track in 1989. Show more GenresSportFormatsDocumentariesBrandSporting Witness Source: BBC Online