Like many Industrial Technology classes, I teach a transportation unit that culminates with the construction of wooden CO2 cars. Well this year I decided to take this classic project to the next level. I had my students design their cars using the Autodesk Inventor software and then 3D printed each design. Seeing my students go through the design process was very interesting because they had to design a car that was both 3D printable as well as aerodynamic. I was so impressed with my student's creations that I decided to share this project and I am hoping to inspire other teachers and students. I posted the files of what my students came up with and would love to see some remixes of this project in the future. Also check out these videos (they had a blast!!!) https://www.youtube.com/watch?v=ndFS8CZR9zM https://www.youtube.com/watch?v=nmyG_KnZS7E https://www.youtube.com/watch?v=FiJg5GZNNiA Students used Autodesk Inventor to design all cars. Netfabb was then used to manipulate the STL files.Checkout the guidelines for this project by opening the "CO2DesignProject.pdf" file. I did not use many specifications for this project because I really wanted to see what my students could come up with. I think the final results turned out great and I already have younger students asking if we are doing the same project next year.Project*Objectives: Students are expected to incorporate math into their projects by coming up with an equation that would allow them to figure out the weight of their cars before they printed them. This actually was very successful and most students were within a gram or two with their estimated and actual weights. Students must also utilize their design and engineering skills to come up with a car that is both fast and aesthetically pleasing.*Audiences: Grades 11 & 12 worked on this project. Their skill level ranged from beginner to intermediate (depending on the student).*Preparation: Students must have a basic understanding of the design software as well as how to using the assembly function in Inventor. Students must also have an above average understanding of math concepts (Geometry was the prerequisite to enter my CAD 2 class). Steps: Checkout the guidelines for this project by opening the "CO2DesignProject.pdf". I also started by having my students sketch out their designs on graph paper. Be sure to give them specifications before hand ( I tweak these every year). After I have improved their sketch, I then allow them to begin designing on the computer. Once they are done with their design on the computer I have them figure out the volume of their vehicle and then figure out an equation to show how much their car would weigh after it is 3D printed. *Results: Students have a lot of fun with this project, and it has created a lot of interest for my program. Once the cars are 3D printed, I then set up the "track". All the "track" is, is a fishing line connect to two points in the hallway or gym. The launcher we use is from PITSCO. After the students race, I conference with them and ask them what they would like to change about their car to make it look better or to make it move faster. I grade their projects on the following things: did they follow directions? Were their designs original? Did their vehicles meet specification?