Sudden accelearation ,had it twice...both just turned off the key...
first, my stepdads Ford Vedette had a 3 spd on the column, floor mounted gaspedal with a hinge at the floor...one spring (we still had the extra rubber mats that hold snow etc, in the car) I came out of our street towards a traffic circle, floored it in forst ,ready to shift to second....full throttle! hinge had rusted off and the pedal slid down /in under the floor mat...its scary ,in traffic!
2nd time was 2 yrs later in my Mini Cooper...I had just adjusted the idle , the idle screw had a bend in it...didnt think much of it, turned it half a turn ,test drove...gas hung up some,so I pressed hard...POP!, suddenly full throttle , and stayed there...checking I found that the throttle linkage went very close to that bent idle screw and I made it go past ,even though it basically stopped against it, then it got hung on the other side... also in traffic in town...