I WAS DRIVING ON MY WAY HOME FROM WORK TODAY 2/3/2017 AND I WAS MERGING ONTO HIGHWAY WHEN I HEARD A LOUD EXPLOSION. I THEN SAW THAT MY SUNROOF HAD SHATTERED AND WAS BOWED OUT. THERE IS A LARGE HOLE IN THE CENTER OF THE SUNROOF AND THE REST OF THE GLASS IS SPIDERWEBBED. NOTHING HAD HIT MY CAR OR MY SUNROOF. I WAS ONLY GOING ABOUT 15 MPH AS I WAS STILL ON A ON RAMP. IT WAS VERY SCARY AND DANGEROUS. I CALLED MERCEDES WHO IS NO HELP. THEY NEED TO RECALL THIS OR BE HELD RESPONSIBLE. THIS COULD HAVE CAUSED ME TO CRASH OR IF MY SUNROOF COVER WAS OPENED I WOULD HAVE BEEN SHOWERED IN GLASS.