The best way to kill Laddy is not to make it look like he died in an accident but to actually make him die in an accident. Take a page out of the great Senna's book put him in a position where he has no choice but to make a move which will result in his fatality. (SPOILER)Note, Senna did not ever put other F1 drivers in a position where they had to make a move resulting in fatality, he would simply drive very aggressively and put the other driver in a position where he had to make a choice: back off or have an accident and go out of the race. Senna also infamously deliberately took himself and Prost out of a race once because if Prost finished the race then he would beat Senna in the race for the championship.