2010 Ford Fusion Hybrid engine problems

I was driving on the freeway and had just exited to a surface street. The vehicle suddenly slowed down and wouldn't go over 15 miles per hour. A red triangle and a message appeared on the instrument panel. It said something like you may now safely pull over and come to a stop. Thankfully I was not still on a very crowded freeway when this happened. It would have been very unsafe to be in the left lane of one of the most crowded freeways in the country and the car suddenly will not go more than 15 MPH.

When driving on the highway at approximately 70 MPH, the wrench indicator light ("limp home" mode) suddenly started flashing, and the gas pedal abruptly became unresponsivethe vehicle would no longer accelerate and could only coast. The abruptly decelerating vehicle was maneuvered across multiple lanes of traffic to the shoulder and turned off. Upon restarting the vehicle after a minute, it was able to resume normal operation for about 15 minutes, when the problem reoccurred, and the same steps were taken.