public Event(playerid)
{
    if(Event_Players >= RACE_PLAYERS)
    {
        foreach(Player, i)
        {
            if(ON_Event[i] == 1)
            {
        		SCM(i, COLOR_WHITE, "EVENT POKRENUT (10 sekundi)");
        		SetTimerEx("EventStart", 10000, false, "i", i);
   			if(IsPlayerInVehicle(i, INFERNUS1))
        		{
       				PutPlayerInVehicle(i, INFERNUS1, 0);
   			}
		    	else if(IsPlayerInVehicle(i, INFERNUS2))
   			{
            		        PutPlayerInVehicle(i, INFERNUS2, 0);
			}
			}
		}
        }
}

#define MAX_EVENT_PLAYERS   20 //Max players able to join the event is 20.
#define MAX_EVENT_CARS      20 //Same value as the EventCars variable


new EventCars[20];

new EventPlayers = 0;

EventCar[0] = CreateVehicle(blbablabla);
EventCar[1] = CreateVehicle(blbablabla);
EventCar[2] = CreateVehicle(blbablabla);
EventCar[3] = CreateVehicle(blbablabla);
EventCar[4] = CreateVehicle(blbablabla);
EventCar[5] = CreateVehicle(blbablabla);
EventCar[6] = CreateVehicle(blbablabla);
EventCar[7] = CreateVehicle(blbablabla);
// And so on

//When a player types a command to join an event or something, use this public (EnterEvent(playerid))

//Command here (example made using zcmd)
CMD:joinevent(playerid, params[])
{
    if(EventPlayers < MAX_EVENT_PLAYERS)
    {
        if(PlayerLogged[playerid] == 1) //Player is logged in, just an example if you have it where the player must be logged it.
        {
            EnterEvent(playerid);
        }
    }
    return 1;
}

public EnterEvent(playerid)
{
    if(EventPlayers < MAX_EVENT_PLAYERS)
    {
        for(new i = 0; i < MAX_EVENT_CARS)
        {
            if(!IsVehicleOccupied(i))
            {
                PutPlayerInVehicle(i, INFERNUS1, 0); //If the car is not occupied, put the player in the vehicle
                return 1;
            }
        }
        SendClientMessage(playerid, -1, "No more vehicles are available!"); //Shouldn't ever happen, since when you type the command it checks if the event is available, and both the cars and players are equal
    }
}


stock IsVehicleOccupied(vehicleid) // Returns 1 if there is anyone in the vehicle
{
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(IsPlayerInAnyVehicle(i))
        {
            if(GetPlayerVehicleID(i) == vehicleid)
            {
                return true; //If the looped player is in that vehicleid, return true
            }
        }
    }
    return false; //If no looped player is in the vehicleid, return false
}