I have a 2008 volvo s60 2.5 car. the driver's floor mat has two clips in the floor to secure it, but will not remain in place. it has come loose multiple times and slides under the gas pedal. i notice it only when i have difficulty/am unable to depress the gas pedal. i brought this to the attention of my deal volvo of calabasas in late march 2010. they stated that the clips were properly installed. almost immediately thereafter the driver's floor mat again came loose and again became lodged under the gas pedal, preventing it from operating properly. if the retention clips are properly installed, then i am concerned that the design may be defective. no injury or accident has occurred, but i want the nhtsa to be aware of this potential issue. *tr