Test Drive 6/Hidden Cars and Tracks

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.

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.