This is another vintage YouTube gem of a video. It’s a late 90’s documentary that follows Toyota Team Europe (TTE) as they build the AE101 based Toyota Corolla WRC to replace the ST205 Celica GT-Four. You get a great inside look at a world R&D process from component testing to wind tunnels and finally having the drivers put the car through its paces in different environments. The narration is in Japanese, but all of the interviews with the TTE staff are in English.