2011 Infiniti G37

Two weeks after having my G37 serviced at the Las Vegas dealership the engine shut down while driving on the freeway at full speed. The car rapidly lost power and speed. The gas peddle was unresponsive and after decelerating, the car would only move forward at very slow speed. A major accident was avoided only through the quick actions of trailing traffic which had to slam on their brakes. After towing back to the dealership they reported the heater hose failed. Their vehicle inspection report provided to me two weeks early reported the heater hoses and connectors where inspected and did not require replacement. When I Questioned this they stated it was a plastic part within the heater hose that failed and they don't check that. I consulted the maintenance manual for the car and at now mileage or time point does infiniti recommend replacing the hose. I have had this car serviced at an Infinity dealership every 7,500 miles since bought new. At no time did they ever recommend replacing the hose. This may be more of a safety issue with Infiniti's service program than the car. But the car computers response to the condition also but driver safety at risk.