I bought my car new with four miles on the odometer on May 10, 2017. After driving it for 19 months, I have about 19,648 miles on it. Last night I was driving on the freeway at 70 mph. The engine jerked and the speed gage dropped to 40 mph but the engine was still racing. I pulled into the right lane and the car slowly accelerated back to 60 mph. When I exited the freeway the car would not accelerate. I pushed the gas pedal down and the gage registered "60" but it slowly accelerated. According to my salesman, it is supposed to be under warranty but I have to get it towed to the dealership. I am supposed to have roadside coverage for mechanical problems, out of gas, flat tires, etc but the service department representative did not offer to tow it for me when I called. I want to be proactive in addressing this problem. Is there a manufacturer customer service number I can call, if needed?