Alain Prost Ligier-Renault JS37 F1

Rare inside footage of Alain Prost's "secret" testing of the Ligier JS37 (Renault V10 RS3C engine) prior to the start of the 1992 F1 season at Castellet/Paul Ricard track (behind [garage] closed doors and not wearing his traditional helmet but the one of Eric Comas once on track). This is followed by the interview of F1 Engineer Frank Dernie and how stunned he was by that test day with Prost.
Credits for amateur shot at the exit of Sygnes corner @ 2:32 going to Jean-Jacques Huguenin/Jackprod • Prost teste la LIGIER ... and rest of Frank Dernie's interview can be found at • Frank Dernie podcast
With also Guy Ligier, Gérard Ducarouge, Frank Dernie, Bernard Dudot and Thierry Boutsen