After researching the CX-9 thoroughly, I bought a new 2007 4 days ago. I live in the mountains of North Carolina. Driving up, the not so steep, mountain, the throttle completely shut down leaving no power. The problem continued and the service manager and Mazda technician kindly came out to see if it was true. The same problem existed. They also brought 2008 CX-9 with them and the same problem existed when that vehicle was driven up the mountain. I have been driving this mountain for 20 years with all types of vehicles, including cheap cars and never had a problem. I AM BESIDE MYSELF. ANY IDEAS?