2004 VOLVO XC70 Unknown Or Other Problems

I HAVE HAD THE SAME FAILURE 3 TIMES WITH THIS CAR. STARTED CAR UP AFTER IT WAS SITTING IN PARKING LOT ON A VERY HOT DAY. WITHIN 1-2 MILES STARTED EXPERIENCING INABILITY TO ROLL WINDOWS UP OR DOWN, CAR STARTED LOSING POWER AND INSTRUMENT CONTROL PANEL WENT BLANK. I WAS ABLE TO GET THE CAR SAFETY OFF THE ROAD. IT WOULD NOT START UNTIL THE NEXT MORNING. IT HAS BEEN TOWED TWICE. THE LAST TIME TO A VOLVO DEALER WHO COULD NOT REPLICATE THE FAILURE; NO CODES WERE STORED OR FOUND. THE CAR IS BACK TO RUNNING GREAT...UNTIL THE NEXT TIME IT DIES.

I WAS DRIVING ALONG THE HIGHWAY AND SUDDENLY MY CAR JUST QUIT RUNNING...IN THE MIDDLE OF A BUSY HIGHWAY...I DIDN'T KNOW WHAT TO DO...2 NICE MEN PUSHED ME OVER INTO THE TURN LANE TO BE OUT OF THE ROAD...MY WINDOWS WORKED, LIGHTS AND SO I KNEW IT WASN'T THE BATTERY...IT JUST WOULDN'T START....ACTUALLY THIS HAD HAPPENED A COUPLE OF WEEKS BEFORE, HOWEVER, AFTER LETTING IT SIT ABOUT 5 MIN. IT STARTED UP AND I WAS ABLE TO GET HOME...I THOUGHT MAYBE IT OVERHEATED BUT NONE OF THE WARNINGS WENT ON...SO I IGNORED IT AND WISH I WOULDN'T HAVE AS WE HAD TO LEAVE MY CAR IN A VACANT LOT OFF THE HIGHWAY FOR TWO DAYS AS IT WAS THE 4TH OF JULY HOLIDAY AND NO ONE WAS WORKING...WE WENT BACK TO CHECK TO SEE IT ON JULY 5, AND IT STARTED UP...AS I WAS DRIVING HOME (JULY 5)SUNDAY...IT QUIT AGAIN...