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.
Any Aston Martin should work as the challenge doesn't designate a specific model like the other challenge. I personally used my 2013 Aston Martin V12 Vantage S, upgraded to S2, but would recommend buying the Aston Martin DB5 as it is on sale for 560,000 credits (down from 800,000) for #Forzathon and for the other challenge you need to complete a championship with it.
For reference quickly, um, 'wrecking' things is how to get a 'Wreckage' skill. Just get 10 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. You do not have to stop like I did in the video to let the skill chain bank. I stopped to let the skill chain bank and start a new one, but you should be able to keep driving to get all of them in one go.
As shown this only takes around 1 minute to do. You don't necessarily have to bank the skill chain for the 'Wreckage' skills to count as I was mid-way through my skill chain when it popped.