Gamblers fallacy. This strikes a chord specifically with me and roulette... there's a 'system' for (supposedly) winning at Roulette, that says if you make a bet that has a 50/50 outcome and lose, double up on it, and make it again, because the probability of getting the incorrect result twice in a row... (three times, four, five, so on...) drops off significantly... after a few spins you are statistically guaranteed for you bet to come off (which you need because your £10 stake is now £320 just to break even)... except it doesn't work like that, because there is not an actual connection between the spins other than in the gamblers head. The chance of a given result is the same each spin, it doesn't change because you feel you are due a win.
To apply that to your scenario, the chance of winning the 20 mill car is the same each day, the chance doesn't go up because you didn't win it the day before.
Again, I'm not saying it is or isn't random, but such scenarios are not proof one way or the other.
On the flipside, if that's something that has happened to you, it might be worth noting what all the variables in your gameplay were at that stage because if it is seeded by players actions, you've clearly got a combination for at least getting the cars on the wheel. They've only appeared for me a max of three times - maybe only twice - since I got the game.
You should really go and an check out the "Do you believe in God?" thread with that attitude.... God exists! Prove me wrong!