The lead pipe
This is how they intended to push the vehicle to its absolute limit. They got out of the automobile after pulling over. The group next carried a long and thick lead pipe and positioned it in such a manner that it would floor the gas pedal on its own.
The capabilities of the WD-40 would be put to the test better than they could have hoped after restarting the engine. Obviously, they would keep the vehicle in “park” so that it did not move around.