This is a free sample from ScanningCars.com. We are uploading a new vehicle to our site everyday! There are different ways you can print this including with wheels attached or make it roll in a couple different ways. Visit our website for a bunch of printable wheel models. We also have instructions on how to get the most out of our models including this one! All our scans are accurately modeled from 3D Scan data. Follow us on Facebook! www.facebook.com/scanningcarsPlease visit this page for a detailed look at each file included: http://scanningcars.com/3d-printable-model-features/