[Davz*|*Criss]

Try something like this:

pawn Code:

new vehicleid = GetPlayerVehicleID(playerid);
    new State = GetPlayerState(playerid);
    if(IsPlayerInAnyVehicle(playerid) && GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
        {
            SendClientMessage(playerid, -1, "You're car driver.");
        }
    }
    if(!IsPlayerInAnyVehicle(playerid) && GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
        {
            SendClientMessage(playerid, -1, "You're not car driver.");
        }
    }