[rjjj]

Put in the top of your gamemode:

pawn Код:

new CreatedVehicleVar[MAX_PLAYERS];

And, in your command:

pawn Код:

CreatedVehicleVar[playerid] = CreateVehicle....

Finally:

pawn Код:

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
    for(new x = 0; x < 500; x++)
    {
        if(vehicleid == CreatedVehicleVar[x])
        {
            //"Let's say that the car is spawned.." ;D
        }
    }
    return 1;
}

I hope that i have helped