Janne unravels the thread by car
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Janne attaches one end of the thread to the fence in the front yard, and the other end to a car, which he slowly drives down the driveway.
On his first attempt, the thread snaps, so Janne hands the end of the thread to Pilvi and drives off again, unravelling 280 metres of thread.
(Written by TRoosevelt1776 and proofread by Karl Craven)