CMD:lock(playerid, params[]) {
    if (!IsPlayerInAnyVehicle(playerid)) return SendClientMessage(playerid, COLOR_RED, "ERROR: You must be in a vehicle to use this command!");
    if (GetPlayerState(playerid) == PLAYER_STATE_PASSENGER) return SendClientMessage(playerid, COLOR_RED, "ERROR: You must be the driver of a vehicle to use this command");
    new vID = GetPlayerVehicleID(playerid);
    new PlayerName[MAX_PLAYER_NAME];
    GetPlayerName(playerid, PlayerName, sizeof(PlayerName));
    loop(i, MAX_PLAYERS) {
        if (IsPlayerConnected(i) && i != playerid) {
            SetVehicleParamsForPlayer(vID, i, 0, 1);
        }
    }
    SetVehicleParamsForPlayer(vID, playerid, 0, 0);
    SendClientMessage(playerid, COLOR_GREEN, "* Your vehicle is now locked.");
    return 1;
}