Cruise Controlled Trophy
Race through Level DC02 without letting go of boost!
This trophy can be quite frustrating to get.
You need to complete Level DC 02 [Twin Turbo] without letting go off the boost. This means that, if you, for any reason, and in any time, release R (R1 for PS4 players) even for a split second, you will not get this trophy. Also, you cannot die, as if you die, you will void the trophy (even if you complete the stage without releasing R, you won't get it).
SugarIsTheDevil has, also, noted something very important
"I figured out a way to get it. I couldn't get the trophy when I hit restart after a failed attempt, but when I quit out of the stage and tried again it unlocked. So if you're going for the trophy and didn't get the trophy requirements (because you died, or because you released the R button for example) quit the stage, return to the menu screen and start again. Let me know if it works. It did for me."
So, if you die, you will have to start the whole level by pressing , then selecting Quit and restarting the stage from Stage Select screen.