Speculation: Did anyone notice this?
It has been showed twice (episode 8 and 10) and only Nat-Kat showed being interview with that 'background'. This interview could be happened in the final pitstop....
Can anyone recognize the place?
Again, it was just my spec
Interesting observation! I think you may be onto something. If they used it after episode 10 then it had to be taken at either Hong Kong, South Korea or after the race. My initial reaction is that the stone walk and tall thin trees aren't in keeping with Hong Kong or South Korea, so it may have been taken at the end of the race. After brightening the picture, the background on the left appears to be more of the tall thin trees seen in the background on the right. There's no buildings in the image as far as I can tell.
The trees, stone walk and low stone wall in the background look like they could be somewhere in Southern California (or even Santa Barbara which I found an extremely weak indication of as the final destination and posted to the Tar 17 Tweets thread lately). It's probably not in the mountains or desert of Southern California. It could also be about 10,000 other places, so who knows?