DRIVING OUR NEWLY PURCHASED 4 WEEK OLD SUBURBAN DOWN I95. FOLLOWING A BATHROOM BREAK AT A REST STOP, WE LOADED UP IN THE CAR, STARTED IT VIA THE PUSH IGNITION AND DROVE DOWN THE ON RAMP ONTO THE HIGHWAY. WITHIN SECONDS, SMOKE BEGAN BILLOWING FROM THE HOOD. A FIRE UNDER THE HOOD ENSUED. WE WERE TRAVELING AT APPROXIMATELY 30-40MPH, WHEN THE SMOKE BECAME SUDDENLY HEAVY. WE PULLED OVER AND PARKED THE CAR ON THE SHOULDER AND ATTEMPTED TO TURN IT OFF. FOR 30-40 SECONDS, THE CAR WOULD NOT TURN OFF, RATHER, IT SHOOK AND SPUTTERED. WE EVACUATED THE CAR AND CALLED THE STATE POLICE WHO ARRIVED SHORTLY THEREAFTER. THE SUBURBAN WAS TOWED TO RICK HENDRICK CHEVROLET IN RICHMOND, VIRGINIA. ABOUT A WEEK LATER, WE WERE TOLD THAT THE PUSH IGNITION IN THE CAR CAUSED AN ELECTRICAL FIRE. CHEVROLET STILL HAS THE CAR AND IS WORKING TO REPAIR, BUT WE HAVE CONCERNS ABOUT TAKING POSSESSION OF A 4 WEEK OLD CAR THAT CAUGHT FIRE. WOULD APPRECIATE CHEVROLET'S ASSISTANCE, BUT THE DEALERSHIP THAT WE PURCHASED THE VEHICLE, KOONS CHEVROLET OF MCLEAN, HAS BEEN NONRESPONSIVE AND VERY UNHELPFUL.