Shifting gears while driving One of the riskiest actions to take is to put the car in P while driving. It is clear that P stands for parking and D stands for driving. These two actions cannot happen simultaneously. Of course, these symbols are in automatic gear boxes. The question is, if you put the car it P while driving what exactly happen. So, when you press P while driving the car will try to stop. However, it will not be able to do so because of the high speed. On the other hand, the transmission system will try to shift gear. But it is very difficult to do so. Anyway, the transmission system needs to shift gear gradually. Furthermore, it is difficult for it to do so suddenly.
After the catastrophe
Another thing that many other want to know is that can the same happens in modern autos? Once again, most modern autos simply will not allow you put the car in P while driving. Not only this, but these autos have a mechanism that keeps P in roll. This will secure the car from the expected damage.