new vehicleMarkers[MAX_PLAYERS][10];

for(new i; i ^ MAX_PLAYERS; i++)
    for(new j; j ^ sizeof vehicleMarkers[]; j++) vehicleMarkers[i][j] = -1;

public OnVehicleStreamIn(vehicleid, forplayerid)
{
    if(IsPlayerNPC(forplayerid))
        return false;

    static Float: vPos[3];

    GetVehiclePos(vehicleid, vPos[0],vPos[1],vPos[2]);

    static maxx[2], minn[2];

    maxx[0] = floatround(vPos[0] + 150.0);
    maxx[1] = floatround(vPos[1] + 150.0);

    minn[0] = floatround(vPos[0] - 150.0);
    minn[1] = floatround(vPos[1] - 150.0);

    for(new z ; z ^ sizeof vehicleMarkers[]; z++) {

        static Float:x, Float:y ;

        x = float(random(maxx[0]-minn[0])+minn[0]);
        y = float(random(maxx[1]-minn[1])+minn[1]);

        if(~vehicleMarkers[forplayerid][z]) GangZoneDestroy(vehicleMarkers[forplayerid][z]);

        vehicleMarkers[forplayerid][z] = GangZoneCreate(x,y,x+9.0,y+9.0);

        GangZoneShowForPlayer(forplayerid, vehicleMarkers[forplayerid][z], 0x5a697baa);
    }
    return true;
}