DT*: THE CONTACT STATED WHILE DRIVING 70 MPH, THE VEHICLE'S ENGINE POWER FAILED, BUT THE RADIO STILL WORKED. POWER STEERING ALSO FAILED CAUSING THE VEHICLE TO SIDE SWIPE A CONSTRUCTION SIGN AS THE CONTACT STEERED TO THE SIDE OF THE HIGHWAY, INTO A REST STOP. NO POLICE REPORT WAS FILED. THE VEHICLE RESTARTED AFTER 20 MINUTES AND WAS RETURNED TO THE RENTAL AGENCY. THE AGENCY WAS INFORMED OF THE POWER FAILURE. IT WAS UNKNOWN IF THE SERVICE DEALER OR MANUFACTURER WERE NOTIFIED.