This is way off topic, but I like you guys so I ask here. In all the years I've driven, I've never tried one thing: bumping my shifter into neutral while coasting (Automatic transmission). My coworker says it's harmless, and indeed I don't need to press the thumb button on the shifter to bump it out of gear. BUT I've tried it a couple of times going below 5km/h and each time, my car violently jolted to a halt. So say I was on the highway if I tried this, what would happen? Is it harmless to do, or is my transmission going to explode out the bottom of my car?