When you stop/crash in the car you will get to a point where you need to go through a conversation in the car about who is going to get out of the car (I picked the options where I would go) and eventually it will come down to a game of rock, paper, scissors. (2 out of 3 to win)
I am pretty sure its totally random the selection so if you lose then quickly pause the game and go back to the main menu and then continue, (which will still start you way back in a long conversation section which i saw many........ many times)
As soon as you win the game the trophy will pop.