There has been som updates regarding the rules about converting cars into tractors. These tractors are mostly used by 15-17 year olds since you can drive it with a moped license. Some of the changes to the rules are that you don't need to use dual gearboxes anymore, it's enough to limit the car to 30 km/h with the vehicles control unit which means FWD cars can be used. You also don't need to cut it up as a pickup anymore.

Here is a 2008 Volvo V70 Classic I saw the other day: