"What about Bobby's stuff?" Jody asked. "You're sure the boxes will fit with all the weapons, clothes and equipment?"
"There's plenty of room", Dean said reassuringly.
"We don't know how", Sam explained. "One night, when I was maybe six years old, I saw a blue box appear. A man stepped out of it, went over to the Impala with his glowing device and did … something. After some time, he looked at me and winked. 'Time Lord technology. Might come in handy' he said, went back into his box and disappeared. Since then, the trunk is bigger on the inside."