general problems of the 2011 Volkswagen CC

While driving my vehicle on the highway, the computer flashed a warning that there is a parking break error and the vehicle proceeded to stop. When pressing the gas pedal the car would not move. Following the repeated ( over 6 times) shutting down and restarting of the car the parking error warning and the engine light appeared and vehicle once again proceeded to stop and no forward motion took place when gas pedal was pressed. Vehicle shut down on two major highways at high traffic/ rush hour times. Following these incidents the vehicle was repaired by sunrise Volkswagen dealership. They preformed a diagnostic and replaced the fuel pump injection system. The vehicle was returned to me and a little over a month later (October 22nd) the same problem reoccurred once again shutting down multiple times on a major highway. The vehicle had to be towed back to the dealer where they are currently working on another diagnostic. It should be noted that in addition to this problem, prior malfunction has resulted in replacement of the entire engine in this vehicle. I've also experienced several coolant system issues for which I have had to return to the dealership repeatedly. I am extremely concerned regarding the safety of this vehicle due to the loss of acceleration while in motion at highway speeds. Each time I'm told the problem has been resolved, I am exposed to possible highway fatality as I resume driving. My suggestion that the vehicle be replaced was rejected and each attempt at repair has proven to be unsuccessful in resolving the problems.