Anarchy: Rush Hour

You should already have it, if you chose to start with multiplayer and followed my advice in "Win 5 times in each multiplayer mode" . If not, there are 2 easy ways for you to do this. One is in "Multiplayer Game" -> "Online", the other is in "Quick Race" from Main Menu. You can actually do it in "Splitscreen mode" too. By choosing the "Ostankino 1" route in the game mode of your choice, you will have your best opportunity to unlock it.

Give yourself enough time in a Best lap time race. Pick "Sport cars" or "Supercars" and Level 5 Devices. Build up your Adrenalin to maximum and go in the corner of the longest straight. Then accelerate to the opposite end by constantly holding down . Try your best to avoid hitting traffic or objects. Don't let go of even if you crash at the end of the straight. You should be able to achieve a speed of 999 km/h easily on this track. Trophy will unlock shortly after, even if you explode.

Note: See "Win 5 times in each multiplayer mode" trophy for additional information.