Probably this one: https://brickset.com/sets/8865-1/Test-Car https://brickset.com/sets/8865-1/Test-Car The difference in the instructions between classic and m

Probably this one: https://brickset.com/sets/8865-1/Test-Car https://brickset.com/sets/8865-1/Test-Car The difference in the instructions between classic and modern sets is interesting too, instructions for both the main and alternate build in just 38 pages. Compared to the modern instructions, which often add just a couple of parts per page.