Shell Helix Ultra and the creative team at JWT have made a damn cool car commercial. In order to show how their particular oil works in an engine, they created a completely clear (and oversized) engine, housed in a glass car. No computers, no CGI -- nothing but a whole bunch of research, plenty of man-hours, incredible amounts of labor, add some cameras and ... action.

The best part of this video, after the jump, is the behind-the-scenes details showing how the 30-second spot was made.