Heading back to my favorite spot to get this challenge done. Head to fields to the right/east of the Yarra Valley Horizon Festival. I designate my spot at the beginning of the video.
Since the challenge does not designate a specific vehicle any vehicle should work. Will update if there are any exclusions that I hear of.
For reference quickly, um, 'wrecking' things is how to get a 'Wreckage' skill. Just get 20 of them per the challenge description and it will pop.
When driving around through the fields you should see the various 'Wreckage' skills popping up at the top of the screen.
As shown this takes less than 2 minutes to do. You may not necessarily need to bank the skill chain as with previous challenges.