I WAS ON VACATION, DRIVING TO CLEVELAND, OH WITH MY WIFE & PARENTS ON 6-13-09, SAT IN 2002 NISSAN ALTIMA, 2.5 SL. AROUND 9.00 PM, ON I-80, APPRX 40 MIL FROM CLEVELAND, SUDDENLY SMOKE STARTED COMING FROM THE CAR HOOD, CAUSING POOR VISIBILITY. TEMP AND OIL LEVEL INDICATORS DID NOT SHOW ANY SIGN OF PROBLEM WITH THE ENGINE. AFTER NARROWLY ESCAPING CRASH WITH OTHER VEHICLES BY GRACE OF GOD, WE COULD STOP THE CAR WITH SMOKE STILL COMING OUT. BY THE TIME I MOVED EVERYBODY AWAY FROM THE CAR, THE SMOKE STOPPED. THIS SUDDEN FAILURE OF THE ENGINE COULD HAVE BEEN MORE DISASTROUS, ENDANGERING PRECIOUS LIVES. ON CRANKING THE ENGINE, LOUD NOISE FROM THE ENGINE MADE US BELIEVE THAT CAR WAS IN BAD SHAPE, SO CAR WAS TOWED TO NISSAN OF NORTH OLMSTED, OH (DEALER). AFTER INSPECTION ON MON, 6/15/09 I WAS INFORMED THAT THE ENGINE CASTING HAD A BIG HOLE APPRX 2" BIG. WE WERE ASKED TO EITHER SCRAP THE CAR OR REPLACE THE ENGINE WITH ESTIMATED COST OF $4500. WE WERE NOT TOLD ANY GOOD REASON FOR THIS ENGINE FAILURE. BEING STRANDED WITH MY FAMILY FOR 3 DAYS AND DESPAIRED, I DECIDED TO REPLACE ENGINE HOPING TO GET COMPENSATION FROM NISSAN. INITIAL POSITIVE RESPONSE FROM NISSAN CUSTOMER AFFAIRS BECAME VERY DISSATISFYING AND FRUSTRATING AFTER I PAID THE DEALER. IT WAS A SHOCK TO US THAT AFTER CALLING SO MANY TIMES NISSAN DID NOT TOOK ANY RESPONSIBILITY STATING ON 6/24 THAT "THE VEHICLE IS OUTSIDE OF MANUFACTURER'S WARRANTY" LATER I FOUND MANY PUBLICATIONS STATING THAT 2002, NISSAN ALTIMA-2.5L ENGINES