Carrier/rack problems of the 2010 Toyota RAV4

While driving at approximately 55 mph on a two lane highway, the sunroof suddenly cracked and then shattered for no apparent reason. There was no debris (rock, bolt) etc found in the glass once we were able to pull over and look at the damage. The glass appears to have bowed upward and away from the frame and then shattered.

I was driving on the beltline at 7:45am. It was about 74 degrees outside, and I was traveling at about 62mph. Suddenly I heard a loud pop that startled me, causing me to pull the steering wheel to the left and the car to veer toward the ditch. I was able to gain control of the car and continue on the road. Initially I thought the car was on fire as there was a loud crackling sound that I couldn't locate. Soon I realized that the sun roof had shattered, and hundreds of minute slivers of glass were raining in to the car--covering half my head and body, the center console, and the passengers seat. I shut the roof panel under the sunroof and drove home. Although the sun roof shattered, it stayed pretty much intact.