Transmission Stuck In Gear problems of the 2010 Nissan Altima

On June 26th,we left the houston area on an out of town trip. At the halfway point we exited 1-10 at schulenberg texas after driving for approx. 100 miles. After coming to a stop at a major intersection, I tried to accelerate at a normal rate and discovered that the vehicle was not responding and didn't have sufficient power to safely move thru the intersection. I further depressed the accelerator and could hear the engine reving but felt little movement from the vehicle. It felt as if the car was stuck in high gear. We slowly gained speed and eventually moved to a parking lot where the car came to a stop;not willing to move beyond that parking space. After allowing to vhicle to cool for an hour, it accelerated 1-time at it's normal rate but soon returned to it's earlier condition. We allowed it to sit for about 4 hours and decided to give it another try. The car moved off in a normal way, we decided since it was underway and because of this safety issue, we decided to return home via all freeway,trying not to stop anywhere. On June 28,2011 we took the car to the Nissan dealer in angleton TX. The service dept. Claimed the cvt transmission had too much oil (half quart) in it from the factory which causes them to overheat which causes the condition we experienced. The dealer stated this has happened to many other Nissan Altima owners (cvt transmission). The dealer stated there is no recall. The problem gives no warning which left us pulling slowly unable to accelerate with fast moving oncoming traffic. Nissan should have notified us of this problem and done a self imposed recall. I am not convinced of Nissan's claim of "too much oil" as the cause of this problem. The car did this briefly once before while moving very slowly in a parking lot but never did it again until June 26 th 2011.