Check Engine Light On problems of the 2014 Subaru Crosstrek

Driving on the freeway at 60mph, warm day (75) a/c was on, starting to accelerate up a slight incline, the engine lost power and car started slowing down. The gas pedal/acceleration was not working. The car went limp and acted as if it was in neutral. While trying to pull over to the side of the freeway, the acceleration kicked back in as if nothing happened. This happened twice. The second time I was driving on city streets at 40mph, same conditions outside, and going up a slight hill in san francisco, the power dies/goes limp, a few seconds later, power on acceleration comes back. There was no check engine light on.