[ScIrUsna]

Hi,

I can save vehicles info in that callback? like i do cikle all vehicles

[Akbaig]

I don't think so, I recommend to use a timer, so that you can backup all the vehicles after some minutes like after 5 mins or so..

That's a better idea.

[DRIFT_HUNTER]

Yes you can, but keep in mind that if you terminate server and not exit carefully that callback wont be called.
Best way would be to save them with timer

[AndySedeyn]

Another approach would be to save data when it's changed and not all at once. It spreads workload rather than bundling it.