2011 Mercury Milan fuel system problems

I was driving on a highspeed road when suddenly there was nothing happening when I pressed the gas. A small wrench came on the dash. The owner's manual said throttle/transmission problem. Had we been in the passing lane we probably would have been rear-ended and killed! As it was, I was able to coast over to the shoulder of the road and eventually pull into a parking lot. I turned off the car, waited a few minutes and turned it back on. I was able to drive about 5 miles before the same thing happened again.

I made a left turn from a complete sign. In the middle of the intersection, the car decelerated and the wrench symbol on the dash came on. As I pulled over, the car started shaking and cut off. I had my children get out of the car because I was unsure of what was going on. I turned the car off, took the key from the ignition. I waited about 5 minutes and then restarted the car. I started and everything was ok. On 9/25/13, this happened while I was driving on a straight road.