the answers sofar. Watch this space!
Character #1 is Robert Montgomery, who played Raymond Chandler's Philip Marlowe in 'The Lady In The Lake' (1947), in which he drove a a 1941 Ford Super DeLuxe (Ride #15) -Carnut
Character #2 is Ralph 'Papa' Thorson playing a bartender in 'The Hunter', a film based on his life and where Steve McQeen (his last film) plays the role ofThorson himself, if you follow me. In the movie McQueen drives a 1951 Chevy styleline (Ride #1) and makes a very poor job of it - Tom_I
Character #3 is Robert Mitchum, who played Raymond Chandler's Philip Marlowe in 'Farewell My Lovely' (1975), in which he drove a a 1940 Buick Special(Ride #14) -Tom_I
Character #4 is Wolfgang Preiss, who played Fritz Lang's Dr Mabuse in 'Die Tausend Augen des Dr Mabuse, in which he drove a 1950 Simca 8 Sport Cabriolet (Ride #13) - Carnut
Character #5 is Adam West as Batman, whose drove The 1955 LincolnFutura/1966 Batmobile (Ride #4) - Otto Puzzell
Character #6 is Tom Conway, who played 'The Falcon', here in 'The Falcon Strikes Back', in which he drives a 1942 Buick Special (Ride #8) - Carnut
Character #7 is Fernandel , who played 'Don Camillo', here in 'Don Camillo e l'onorevole Peppino', in which he drives a 1925 Fiat 509 (Ride #11) - Carnut
Character #8 is Humphrey Bogart, who played Raymond Chandler's Philip Marlowe in 'The Big Sleep' (1946), in which he drove a a 1938 Plymouth DeLuxe (Ride #2) -Oswald
Character #9 is George Sanders, who played Leslie Charteris's The Saint in various movies: here 'The Saint in London', in which he drove a 1938 Lagonda LG6 (Ride# 7) -Carnut
Character #10 is Ralph Meeker, who plays Mickeys Spillane's Mike Hammer , in which he drives a 1954 Chevrolet Corvette (Ride# 9) -barrett
Character #11 is James Garner, who, following on from Bogart, also played Raymond Chandler's private detective Philip Marlowe in the 1969 film 'Marlowe'. In the film he's seen driving a 1963 Plymouth Fury convertible, (Ride #6) -Tom_I
Character #12 is Eddie Constantine, who played Peter Cheyneys' Lemmy Caution in several films, and drove - in 'Les Femmes s'en Balancent' - a 1953 Oldsmobile Super 88 - Tom_I
Character #13 is John Gavin, who played agent OSS 117 in "Niente Rose per OSS 117" ("Pas de roses pour OSS 117"), driving Ride #5, a Mercedes-Benz 230 SL Carnut.
Character #14 is Elliott Gould, who again played Marlowe in 'The Long Goodbye' and drove a 1948 Lincoln Continental (Ride #14) - Carnut
Character #15 is William Powell who played Nick Charles, here in "After the Thin Man" and drives a '36 Packard Super 8 (Ride #12) - Carnut.
Bonus: George Sanders is the only actor who played two and a half of these characters: The Saint, The Falcon, and almost Philip Marlowe in 'The Falcon Takes Over', adapted from Raymond Chandler's novel 'Farewell My Lovely'