it's on youtube, episode 35 part 2. at 5:30 he was talking about some kind of perspective, it just stuck on my head since 2 days. He said like car co , the sounds is definitely that but, I couldn't find it in google anywhere. Seems like some really advanced perspective, and I'm digging so much lately because of vehicule sketching
The host on the video is feng zhu a talented industrial designer with an in depth explanation of his process, definitly worth the watch.
thanx in advance