#include <a_samp>
#include <foreach>

public OnPlayerCommandText(playerid, cmdtext[])
{
    if(strcmp(cmdtext, "/rveh", true) == 0 && IsPlayerAdmin(playerid)) 
    { 
        new bool:Uzywany[MAX_VEHICLES]=false,v;
        foreach(new i : Player)
        {
            if(IsPlayerInAnyVehicle(i))
            {
                v=GetPlayerVehicleID(i);
                Uzywany[v]=true;
                if(IsTrailerAttachedToVehicle(v)) Uzywany[GetVehicleTrailer(v)]=true;
            }
        }
        for(new nr = 0; nr < MAX_VEHICLES; nr++)
        {
            if(Uzywany[nr]) continue;
            SetVehicleToRespawn(nr);
        }
    }
    return 1;
}