Car Will Not Accelerate problems of the 2011 Kia Motor Optima

On September 7, 2016, I was driving down the highway at 70 mph in my 2011 kia Optima when all of a sudden the engine shut off and all of the lights on the dashboard came on. I could hear the engine rev slightly when I stepped on the gas, but the car would not accelerate. The engine just shut off. It was 7:30am when this occurred so luckily there were not many cars on the road yet. I was able to get the car over, however, because the engine was off, the breaks would not work well. I was finally able to get the car to stop by continuing to hit the breaks and applying the emergency break as well. Kia recommends oil changes every 7,500 miles, however, I usually have mine done every 5,000. I had zero warning signs that something was wrong with my car. The last oil change was performed on August 31, 2016, and the mechanic that performed the change said everything looked fine. There was zero smoke coming from the engine or exhaust and no "knocking" sound in the engine. I had the car towed directly to the dealer. Once there, we tested the battery and it seemed a little low. Mind you this is a new battery purchased from costco about 2 months ago. We tried jumping the car and after trying to start the car a 3rd time, the engine started shooting out black smoke and had a foul smell to it. Several hours later, I received a call from the dealer authorizing $280 to open the top of the engine so they could take pictures and send it to kia. . I searched on the internet and found several other 2011 kia owners experiencing a similar issue and was just told by a friend the same thing happened to her 2011 Optima as well. Looks like Hyundai had the same issue and it is the same engine as the kia and had a recall. My car had 101,500 miles (mostly highway miles) and the only issue I ever had was to replace a clockspring in the steering column about 6-months ago.