“Why not?” I asked her.

“The grease eats the rubber pickup belts and jams the coin chutes,” Marge said.

“That machine will kick back raw, dirty currency every time.”

“So the bank won’t accept them?” I asked.

“Not in that condition,” Marge said.

“They have to be washed, dried completely, and wrapped in fifty-cent paper rolls before we can take them at the counter.”

She switched off the microphone before I could ask anything else.

I drove three blocks down to Heckert Auto Repair and parked in the gravel lot along the side, behind the service bays.