[Yaszine]

This one ?

pawn Код:

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
    if(Speedox[playerid] == 1){TextDrawShowForPlayer (playerid, Text:SPEEDOX);}
    else{TextDrawHideForPlayer(playerid, Text:SPEEDOX);}
    return 1;
}

And should also this ?

pawn Код:

public OnPlayerExitVehicle(playerid,vehicleid)
{
if(Speedox[playerid] == 1)
{
TextDrawHideForPlayer(playerid, Text:SPEEDOX);
}
else {}
return 1;
}

But there is OnPlayerUpdate it show the text if player Speedox=1 & incar !!