Jukka's studio-made Batman car
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Jukka brings in a Batman car which he claims he'd made for his children out of a cardboard box.
It is later revealed that he'd been seen making the car in the studio just before the filming began.
Because this means the car is technically a 'studio-made' object, he is disqualified.
(Written by TRoosevelt1776 and proofread by Karl Craven)