My brakes failed to stop my car I was driving down [XXX]. I went to brake because I was going to slow down cause I was just over the speed limit and my brakes went all the way to the floor and I I could not stop the car with the brakes , so I pulled over to the side and slowly came to a halt. I was so shook up. I do not know if I put it in neutral or put it in a lower gear or if I just coasted to a stop. I ended up hitting a guard rail and that slowed me down, but I still went down the guard rail it basically cut a lot of the right side of my car. See the photos below for damages. I’d been trying to start the car as I would have been able to drive to work. I tried to start the car, but it would not because the gas-pedal went all the way to the floor i found out that there is a break interlock system that prevents it from starting when there is no brakes,then got my cell phone, called the police and had them write out a report. I then called a tow truck and they tow it to caliber collision in [XXX]. They told me they moved it three times but they didn’t tell me how they moved it, but I can’t believe they could’ve started it so they must’ve had it pulled to a different area so they couldn’t work on it. I am still waiting to have the car working order. I hear that you’re gonna need the black box but I have no idea what that entails. I did talk to the police and they looked at it. They really couldn’t tell what happened but they knew I could not get it driven the tow truck driv