We love the balloon racers/cars that we have seen here on thingiverse and we wanted to create something different. Well we designed a ferrari 458 Balloon racer. But rather than having just 1 outlet we have all three just like on a real 458.http://gromfrog.comPrint with low infill and raft for body and the wheels you should just a higher infill to make them stronger. The wheels go theough the body and should be a tight fit when pushing them together within the body but they should be free moving when inserted.