The contact owns a 2018 Jeep Cherokee. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact drove the vehicle to the shoulder of the road and the vehicle lost motive power. The contact attempted to restart the vehicle however, the vehicle failed to restart. In addition, the contact stated that the failure had occurred while driving on a major highway. The contact stated that the vehicle was at an unsafe location and the local authorities towed the vehicle to a safe location. The vehicle was later towed to an independent mechanic; however, the vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The dealer was made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 44,231.