URGENT! Gases by itself

While the car was driving on a straight road with a normal 50-60, it started to push itself as I stepped on the gas, I slowed down immediately, even after a little more I stopped completely, but the car continued to push by pushing my foot with the brake pedal almost up. I lifted my foot from the brake and gave it a throttle and reached a speed of 50 km, I stopped again and put the gear N (neutral) and then P (park). The car continued to deliver gas to the engine detonator, withstand over 4000 rpm. & nbsp; I couldn't understand what happened, I switched off the ignition for a while and then it got better, but before 10 minutes it is the same problem, this continues for 1 week. & nbsp;

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