MY 2007 NISSAN TITAN WAS PARKED FOR 2 DAYS , AT 5:30 AM AUGUST 12, 2014 I HEARD THE TRUCKS HORN SOUNDING OFF WITH JUST A CONSTANT BLAST . I WENT OUT TO INVESTIGATE AN NOTICE THE WIND SHIELD SHATTERED AND MY KEYLESS REMOTE WOULD NOT TURN OFF THE HORN . I OPENED DRIVE SIDE DOOR , BLACK DENSE SMOKE FILLED THE CAB AND THE CENTER OF THE DASH HAD A LARGE HOLE AND THE TEMPERATURE INSIDE THE CAB WAS INTENSE , BUT NO FLAMES .I SPRAYED DOWN THE AREA WITH MY EXTINGUISHER ,HORN STILL ENGAGED I DISCONNECTED BATTERY.ITEMS THAT WERE STORED IN A TOP COMPARTMENT OF THE DASH , ENDED UP ON THE DRIVERSIDE SEAT TELLS ME THAT SOME KIND OF EXPLOSION OCCURRED , NOT JUST ELECTRICAL AND THE ITEMS WERE NOT BURNT . ALL WIRING , BLOWERS , EVERYTHING IN AND AROUND THE DASH WAS DESTROYED ,AND STILL DO NOT KNOW THE CAUSE .I HAD TO HAVE ALL REPLACED .REMINDER TRUCK NOT USED FOR TWO DAYS. *TR