You unlock hidden cars and tracks by winning various tournaments.
Well, to tell you the truth, there are no "hidden" cars or tracks in Test Drive 6. I mean, not in the sense of you being suddenly challenged by a McLaren F1 to a race at the Autobahn. All the cars and courses you "unlock" are available in Tournament mode. I would imagine that the reasoning goes like this: The game developers have a certain amount of cars and a certain amount of tracks. In order to increase the longevity of the title, they decide not to make all tracks immediately able to be raced on. So they come up with the idea of many tracks not coming up until later stages of long tournaments. Of course, if the only way to race on, say, Hong Kong was to build up to a class 4 car and wade through 12 races in tournament 4-1, nobody would be doing it. So, in order to keep some of the tracks a "surprise" for later in the game, but still able to be played at will once they've been found, the developers used the trendy "unlocking" system. It also solves the problem of motivation for a player to play through and win all of the tournaments to unlock everything, since there's no real ending to speak of.
Here's a list of the cars and tracks available before you win any tournaments.
| Single Race Tracks | Practice Cars | Practice Tracks |
|---|---|---|
| Rome | 99 Jaguar XK-R | Rome |
| Rome Backwards | 99 Audi TT | Rome Backwards |
| London | 68.5 Ford Mustang 428 CJ | London |
| London Backwards | 72 Plymouth Hemi Cuda | London Backwards |
| 99 Lotus Elise | Pelton Raceway | |
| 69 Dodge Charger | Pelton Raceway Backwards | |
| 99 Lotus Esprit V8 | Ireland | |
| 99 Nissan Skyline GTR | Ireland Backwards | |
| 99 Venturi Atlantique | England | |
| 99 Subaru Impreza 22B STI | England Backwards | |
| 66 Shelby Cobra | Cape Hatteras | |
| 99 Dodge Viper GTS | Cape Hatteras Backwards | |
| 99 Aston Martin DB7 Vantage | Egypt | |
| 68 Ford GT-40 | Egypt Backwards | |
| Aston Martin Project Vantage |
Now, here's a table that will tell you which tournament you'll have to win in order to get a specific car/track unlocked.
| Car/Track | Class/Tour Number |
|---|---|
| Track: Hong Kong | 4-1 |
| Track: Hong Kong Backwards | 4-2 |
| Track: New York | 3-2 |
| Track: New York Backwards | 4-1 |
| Track: Paris | 2-2 |
| Track: Paris Backwards | 3-1 |
| Car/Track | Class/Tour Number |
|---|---|
| Car: Caterham 7 | 1-1 |
| Car: Dodge Concept Car | 2-1 |
| Car: Dodge Viper GTS-R | 4-1 |
| Car: Ford F150 Lightning | 1-1 |
| Car: Ford Mustang LX 5.0 | 1-1 |
| Car: Ford Mustang Super Stallion | 2-1 |
| Car: Jaguar XK-180 | 3-1 |
| Car: Jaguar XJ-220 | 4-1 |
| Car: Lotus Esprit Turbo | 1-1 |
| Car: Lotus GT1 | 4-1 |
| Car: Marcos Mantaray | 1-1 |
| Car: Nissan R390 GT-1 | 4-1 |
| Car: Panoz Esperante | 2-1 |
| Car: Plymouth Prowler | 1-1 |
| Car: Saleen Mustang S351 | 3-1 |
| Car: Shelby Series 1 | 2-1 |
| Car: Toyota GT-One | 4-2 |
| Car: TVR Cerbera | 3-1 |
| Car: TVR Griffith | 2-1 |
| Car: TVR Speed 12 | 4-1 |
| Car: Venturi 400GT | 3-1 |
| Track: Caribbean | 2-2 |
| Track: Caribbean Backwards | 3-2 |
| Track: Hong Kong | 4-1 |
| Track: Hong Kong Backwards | 4-2 |
| Track: Italy | 3-1 |
| Track: Italy Backwards | 2-2 |
| Track: Jordan | 2-1 |
| Track: Jordan Backwards | 4-1 |
| Track: Lake Tahoe | 2-1 |
| Track: Lake Tahoe Backwards | 4-1 |
| Track: Maui | 2-1 |
| Track: Maui Backwards | 3-1 |
| Track: Newcastle | 3-1 |
| Track: Newcastle Backwards | 2-2 |
| Track: New York | 3-2 |
| Track: New York Backwards | 4-1 |
| Track: Paris | 2-2 |
| Track: Paris Backwards | 3-1 |
| Track: Switzerland | 2-2 |
| Track: Switzerland Backwards | 4-2 |