Boxes and Tubes are fun and all, but at some point we want to design something cool like a car. This is an introduction to surfaces that twist and turn in more than one plane. A common issue I find in vehicle design is the lack of understanding of curved shapes. No one really wants to plot anything out, but it's worth doing every once in a while to sharpen your understanding of complex forms. When it comes to cars, I see a lot of fudging happening in the bumpers where the forms turn away from the viewer. Those things are not covered in this video, but the basics of how we can start to think about them is.