Trials HD Easter Egg - The Number 42

Open up Stock Market under the Medium tracks. Under the 5th checkpoint is a lower level. There are many ways to get under the platform. Simply fool around and find one for yourself. Once under, roll backwards and hit an afterburner. Don't worry, there's a checkpoint down there! Normally, this is where you go to get the Market Meltdown achievement, but instead of going forward and up to the high platform, use the afterburner to go straight up. If you go high enough, you'll hit another afterburner. Use it to fly up the hole in the ceiling and enter an empty room with the number 42.