new RentsCar[MAX_PLAYERS];
new VehiclesToRent[5];

forward HasRentedCar();

public OnGameModeInit()
{
    VehiclesToRent[0] = AddStaticVehicleEx(...);
    VehiclesToRent[1] = AddStaticVehicleEx(...);
    VehiclesToRent[2] = AddStaticVehicleEx(...);
    VehiclesToRent[3] = AddStaticVehicleEx(...);
    VehiclesToRent[4] = AddStaticVehicleEx(...);
    SetTimer("HasRentedCar",10000, 1);
    return 1;
}

public OnPlayerCommandText(playerid, cmdtext[])
{
    dcmd(rentcar, 7, cmdtext);
    dcmd(stoprent, 8, cmdtext);
    return 0;
}

dcmd_rentcar(playerid, params[])
{
    #pragma unused params
    RentsCar[playerid] = 1;
    return 1;
}

dcmd_stoprent(playerid, params[])
{
    #pragma unused params
    RentsCar[playerid] = 0;
    return 1;
}

public HasRentedCar()
{
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(IsPlayerConnected(i) && RentsCar[i] == 1)
        {
            SendClientMessage(i, 0xFF0000FF, "You payed for your rented car ($500)");
            GivePlayerMoney(i, -500);
        }
    }
}

public OnPlayerStateChange(playerid, newstate, oldstate)
{
    if(newstate == PLAYER_STATE_DRIVER && VehiclesToRent[4])
    {
        if(RentsCar[playerid] == 1)
        {
            SendClientMessage(playerid, 0xFF0000FF, "You entered the car you rented!");
            return 1;
        }
        else
        {
            RemovePlayerFromVehicle(playerid);
            SendClientMessage(playerid, 0xFF0000FF, "Type /rentcar to rent this car!");
            return 1;
        }
    }
    return 1;
}