What is wrong with my car? It was shaking and overheating?

Tonight, I was driving back home, i turned on the heater and it blew cold air! I thought maybe because it s a cold night and it would take few minutes to get warm. I decided to go to a drive through and buy a burger. While I was in the drive through line, my car was shaking and I looked at the rpm, it was really low, under 1000rpm. So I put my car on Park and pushed the gas to 3000rpm when I released the pedal, the car turned off. I put the car back on drive and made sure to press the pedal just enough so the car wouldnt turn off. When I roled my window down to get my burgur I heard this loud noise coming from my engine, it sounded like a blow dryer. I went back to the street then I notice my car is overhearting! The pointer for overheating was all the way to the red zone. I turned on the heater again to try, heater was still blowing cold air. So since I was one block from home I just drove the car home. But anyone knows whats going on?
My car is a 2007 ford focus

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