I MADE SOME. WE ARE GOOD.
Setting the trap wasn't hard. There was only one way out of the loading site anyways. He set the car nearby, easy to get to if he needed to do a chase. Which meant getting topside was even easier. The rafters above, the rooftops, anywhere that could give him a clear view. The Joker should have learned not to wear such flamboyant colors. They could see him miles away.
That was probably the idea.
He raised the clicker in his hand. With a press of the button, the car sent out a shell that launched an EMP. The lights went dark. Now it was time to see who would run screaming where.