My 01 Protege starting running really hot as I was driving down the turnpike.... on 2001 Mazda Protege

....So when I got to my exit and stopped at the toll the car stalled and wouldnt start back up...put a gallon of water in the radiator....nothing.....oil looks good...can someone please tell me what it could be?

Asked by for the 2001 Mazda Protege