Only allow vehicle engines to be turned off at speeds < 5 MPH

The suggestion is extremely simple - Make it so the player can only turn off the vehicle engine when either stopped or going at a very low speed. Not to mention other servers, but I've seen similar keybinds used for vehicle off/on but one thing I saw in one that stuck out was that vehicles can only be turned off when stopped.

This is good for a few reasons. 1. It's more realistic. It's typically something you can't do IRL, which is to turn a vehicle off using the ignition while the vehicle is in drive and moving.

2. It stops the very minor issue of some of the more fat-fingered (me) players from accidentally cutting the engine while driving at a high speed, and what comes with that is a significant delay in being able to cut it back on and put it back in drive. Not sure why that delay is there, but I assume it's a bug. Implementing this very simple adjustment would completely eliminate this issue, in my opinion.

As for cons, I can't really think of one except for a 'stealth' reason, but that doesn't make much sense because most people would probably just go in foot rather than killing an engine at high speed and rolling up to enemies. That's a stretch for a con.

All in all, this is just a really nice QoL adjustment, in my opinion.