Austin Latour AM one hour open lab - Rube GoldBerg project

Today for the one hour of time to work on the Rube GoldBerg project, my partner and I found a DC blower that we plan to use for our part. We plan to have a sensor, we are not sure what it will be, trigger the blower to run and push a small car with a sail on it move and bring the marble to the next group's contraption. The car's sudden stop will cause the marble to roll off the car and into the next groups thing.