In L.A. Noire for the PS3 and Xbox 360, there are fifteen hidden bonus vehicles in garages around the city. Each garage has a shield symbol on it, and a door to it with a golden handle so you can tell it’s a door that can be opened.
When you find these hidden vehicles, it will be unlocked in the vehicles section of the Extras menu, and it will place a vehicle marker on the map so you can easily find them again later.
A tip to help you get these quicker, place a custom marker near the area specified, then go up to your car and hold the Y button for Xbox 360, or Triangle for PS3. This will make your partner drive automatically to the location, and he will always drive to custom markers if one is set.
Here are all of the hidden bonus vehicles, sorted by location.
I compiled a video guide as well that will show you exactly where to find all of the hidden bonus vehicles. Please rate the video if you found it helpful.
Central
Cord 810 Softtop – Found behind a building on Mateo St. Go North on Mateo from Olympic Blvd. and it’s the second corner on the North and right side. The garage is down a sloped driveway behind the building.
Delage D8 120 – Found in an alley between Beacon Ave. and Union Ave. just North of 8th St.
Phantom Corsair – Found at the Alaco Station on the corner of 3rd St. and Traction Ave.
Stout Scarab – Found in the garage of a tall building between 4th and 5th St. North of Whittlier Blvd.
Talbot GS26 – Found at the Alaco Station on the corner of 6th St. and Bixel St.
Hollywood
Cadillac Town Car – Found at the Alaco Station located on the corner of Bronson Ave. & Fountain Ave.
Davis Deluxe – Found in a residential garage two streets North of Melrose, between Wilton Pl. and Western Ave.
Delage D8 120 S Poutout Aero-Co – Found near the corner of Normande Ave. and Lemongrove Ave. Go North from this intersection, and it’s behind a house a little up on the left.
Delahaye 135MS Cabriolet – Found in the garage of a stucco house on the north side of Franklin St. between Ivar and Vine.
Duesenberg Walker Coupe – Found behind the Automobile Club on the corner of Santa Monica Blvd. and El Centro Ave.
Voisin C7 – Found at the Alaco Station on the corner of La Brea and Sunset Blvd.
Wilshire
Chrysler Woody – Found in a residential garage at the south end of the alley one block west of 7th St. & Vermont Ave.
Cisitalia Coupe – Found at the Alaco Station on the corner of Vermont Ave. and Melrose Ave.
Ford H Boy – Found at the Alaco Station on the corner of Beverly Blvd. and Kingsley Dr.
Tucker Torpedo – Found behind some buildings on the North East corner of Oakwood Ave. and Western Ave.