Yes, at the very least for admins without having to clear all of the data from the vehicle or the whole mod that would be useful. A way to let the driver do it would be good too, so that if they plan to take a car someplace they can boot people out at their house first instead of leaving seats open and driving them into some nonsense situation.

Also imagine on a server with theft allowed, a car is stolen with passengers inside and they then find themselves waking up to be teleported out of a safehouse zone, or trapped inside of a box/garage, etc.. If the thief could kick players out that would help to avoid this when it isn't intended by said thief.

It would of course enable some amount of abuse if someone regularly logs off in their vehicle, but I think the primary use case is for when you're disconnected or desync'd, not for logging off in your car all the time - at least that's how I see it.

you could add a mod option type deal to give players the option to select where they want to spawn if its possible

no for the moment, because this is the principle of this mod