While traveling at a high rate of speed of 75 mph, on the highway, my brakes failed, the brake pedal was pushed to the floor. The car was hesitant to shift/accelerate. Upon trying to get some type of braking remedy i almost crashed from off the bridge that i was trying to merge on to. upon trying to stop the car i went up a small grade which brought the car to a stop with the emergency brake on. While out of the vehicle the back, driver side caliber caught flame with bluish and greenish flames from the brake fluid coming out, being the metal was at an extreme temperature. I thankfully had my children's drinks/slushies in the car to throw on the flame to stop the spread and to put the flames out. I had to call for a tow truck to get myself and children off the side of the highway. After a $172.98 bill, the car was towed home. I contacted the dealership, which was then told i was responsible to pay and have it towed yet again to the dealerships lot. I have contacted the ford manufacture customer service line, dealership and the number for the recall notice multiple times to get my car fixed and have yet to receive adequate help in doing so.