You have never seen something like this before!
BeamNG is a young startup company developing a state of the art real time physics simulation engine. I could explain it to in a very long paragraph full of words that I don't even understand, but I won't do that here. What I will do is embed a video RockLeeSmile, a fantastic Youtuber who put out fantastic gameplays, commentaries and overall amazing videos, made showing off some of the most spectacular crashes you can achieve in the game/tech demo. Now think about the possibilities one being GTA VI next-gen with this...OMG!!!
Check the video for yourself and subscribe to his channel, he is a really cool dude!