What surprises me is that the power is still applied to the motor when both pedals are pressed, I can see the motor overriding the brake if the brake pedal is only lightly pressed, very worrying.
I'm pretty sure that on my Prius the application of the brake, even lightly, would cut power to the motor and the ICE.
I thought I would try something today.
While parked on a empty car park, I put the car into drive and tested if it was possible to press the footbrake and the “GO” pedal at the same time with my right foot and see what happened, this is what I found.
When you have your foot in a position that is over to the right of the foot pedal and not dead central, what happens is this.
While the foot brake is taking up the free play / travel, the outside of your right footwear hits the “GO” pedal before the brake pressure is sufficient enough to hold back the car.
At this point the motor is stronger than the light pressure applied to the foot brake.
So, as you push harder the car continues to move forward.
Extra pressure and increased travel, then makes the foot brake more powerful and pulls up the car harshly.
So, with your foot incorrectly positioned and NOT applying foot pressure correctly in the centre to the foot brake, it is possible to effectively bridge the both pedals with one foot.
If you shoe size is large, then I think the chances are increased.
If the free travel point of the footbrake, was less or the “GO” pedal decreased, then this could not happen, because the foot brake would have firmly engaged before the “GO” pedal was touched.
I hope this makes some sense ????.
Just to say, if pressure is applied to the centre of the foot brake pedal, then this situation does NOT happen.