This lesson was based off the image of a "Monster" Smart Car I thought was hilarious. That's it above.
I remember as a kid designing cars and trucks and decided to give my students a chance to do the same thing. I searched out images of altered and souped-up cars and showed them to my students. I found one Smart Car I used as the basis for a simple outline version for kids to put under their paper and trace to get the main lines. They were also allowed to draw free hand if they wished.
I presented this lesson in my private class with a range of ages of 7 through 16, so you can see the varying results based on age and ability, but everyone really enjoyed this one-day design lesson.