Rare treat! Found an old VHS video tape given to me by an industrial design school classmate long ago back in college in the early 1990s showing GM car designers demonstrating traditional sketch rendering techniques including GM Design Chief Ed Welburn who's retiring this year (2016). Perfect timing! Guessing video is from early 1980s, maybe 1983? (based on Ed Welburn saying he was at GM for 11 years in the video and now retiring after 44 years in 2016). Enjoy!

Featuring demos by GM designers: Andy Hanzel, Tom Peters, Ed Welburn, Robert Menking, William Quan, Silvia Ramos, Jon Albert, Pres Brunning