//ONTOP
new iVehicleObjective[MAX_VEHICLES][2];
new PersonalSVec[MAX_PLAYERS];
//IN OnPlayerCommandText
if(strcmp(cmd, "/mycar", true) == 0)
{
    new Float:X,Float:Y,Float:Z;
    GetPlayerPos(playerid,X,Y,Z);
    PersonalSVec[playerid] = CreateVehicle(522,X,Y,Z,0,0,90,1,194,-1);
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(i != playerid)
        {
            SetVehicleParamsForPlayerEx(PersonalSVec[playerid], i, 0, 1);
	}
    }
    return 1;
}
//SOMEWHERE
stock SetVehicleParamsForPlayerEx(vehicleid, playerid, objective, doorslocked)
{
	SetVehicleParamsForPlayer(vehicleid, playerid, objective, doorslocked);
	iVehicleObjective[vehicleid][0] = objective;
	iVehicleObjective[vehicleid][1] = doorslocked;
}

public OnVehicleStreamIn(vehicleid, forplayerid)
{
	SetVehicleParamsForPlayer(vehicleid, forplayerid, iVehicleObjective[vehicleid][0], iVehicleObjective[vehicleid][1]);
	return 1;
}