Our initial idea was to make a flying car that could flip it's wheels up and turn into a quadcopter.  We quickly decided against that because it was complicated and needed gyros for stable flight. We decided to make a hovercraft that could go over different terrain. We started by with a design that used a single propeller for lift and two small propellers for forward movement and steering.  Unfurunately, the lift propellar had to much force and spun the whole hover car. The second desing used two motors that are counter rotating to stop the hover car from spinning. The hover car was made from foam core and had basic support frames. We added decorative frames that made it look like a Dodge Challenger / Charger. We call it the AeroXcar. We used Rhino every step of the way to make all the pieces for the hover car. All our pieces were laser cut out of foam core and the motor mounts were out of thin wood. The AeroXcar includes a arduino mini which is programmed to allow remote control of the lift motors. The back 2 mini motors are controlled by the arduino and can control the motors at diferent speeds to stop spin and turn. There is a 6 channel receiver that connects to a controller. The left stick turns the lift propellers on while the right stick is used to turn the hover car. We use a Lithium Polymer battery to power our car. If we had more time we would put bigger motors on the back that would make it go forward faster and turn better.