The contact owns a 2019 Infiniti QX60. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated the brake pedal was depressed; however, the vehicle failed to stop as intended. The vehicle was drifted to the shoulder of the road where the engine seized. No warning lights were illuminated. The vehicle was started; however, the vehicle failed to start as intended. The vehicle was towed to the dealer where it was diagnosed with alternator failure. The contact was informed that the alternator needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 75,000.