Airbags Deployed with no impact/collision

[Mmusikanth]

I have a '06 BMW X5 4.4i (one owner, 130K miles). While driving on the highway yesterday, traveling at normal highway speeds, my passenger side airbags deployed. There were no cars in my immediate vicinity, and the road (I270 North in Maryland) is in exceptionally good shape. At first I thought I may have hit some debris, but I felt absolutely nothing, When I eventually got off the highway and back to work, I took a closer look at the car - to FIND NO DAMAGE, or sign of impact whatsoever - front, sides, undercarriage - nothing. I called BMW NA and at first they were very helpful, but when it was escalated to some "resolution specialist" he outright asked me why I was calling them. When I explained what had happened. After explaining why i was calling, he said he would take it to his supervisor and they would get back to me in 3-5 business days. Needless to say this is just not acceptable, my question - has this happened with anyone else out there? This is my 4th BMW, and 15th in our family, I also own 2 BMW motorcycles and I have never experienced something like this.