The frameless all-metal enclosed steel sheet structure of the entire car, the cage type body and the anti-collision steel beam whose strength achieves 1,000~1,200 MPa can fully protect the owner and greatly increase the safety coefficient. QQ3 is the only minicar which has passed the frontal collision test of National Technology Research Institute. The firm high-rigidity cage type body structure has a strong anti-impact capability to protect the body from distortion during collision and rolling. The design concept and the high technology adopted ensure safety more effectively.