//ON top of the script
new
    fstr[128],
    Text:TD_Speedo[MAX_PLAYERS][2];
//onplayerupdate
    if (IsPlayerInAnyVehicle(playerid))
    {
        new
            vspeed;
        vspeed = GetVehicleSpeed(GetPlayerVehicleID(playerid));

        format(fstr, sizeof(fstr), "%d", vspeed);
        TextDrawSetString(TD_Speedo[playerid][1], fstr);
    }
//if oldstatedriver
        for (new i; i <= 2; i++)
        TextDrawDestroy(TD_Speedo[playerid][i]);

//onplayerstatechange
            if (GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
    {
        new
            Float:vhp,
            vspeed;
        GetVehicleHealth(GetPlayerVehicleID(playerid), vhp);
        vspeed = GetVehicleSpeed(GetPlayerVehicleID(playerid));

        TD_Speedo[playerid][0] = TextDrawCreate(590.000000, 427.000000, "Km/h"); // speedo
        TextDrawBackgroundColor(TD_Speedo[playerid][0], 255);
        TextDrawFont(TD_Speedo[playerid][0], 1);
        TextDrawLetterSize(TD_Speedo[playerid][0], 0.389899, 1.299900);
        TextDrawColor(TD_Speedo[playerid][0], 13107455);
        TextDrawSetOutline(TD_Speedo[playerid][0], 1);
        TextDrawSetProportional(TD_Speedo[playerid][0], 1);

        format(fstr, sizeof(fstr), "%d", vspeed);
        TD_Speedo[playerid][1] = TextDrawCreate(560.000000, 427.000000, fstr);
        TextDrawBackgroundColor(TD_Speedo[playerid][1], 255);
        TextDrawFont(TD_Speedo[playerid][1], 1);
        TextDrawLetterSize(TD_Speedo[playerid][1], 0.389899, 1.299900);
        TextDrawColor(TD_Speedo[playerid][1], -1);
        TextDrawSetOutline(TD_Speedo[playerid][1], 1);
        TextDrawSetProportional(TD_Speedo[playerid][1], 1);
        
        for (new i; i <= 2; i++)
        TextDrawShowForPlayer(playerid, TD_Speedo[playerid][i]);
        }
     //
stock GetVehicleSpeed(vehicleid)
{
    new
        Float:vel[3],
        Float:tempspeed;
    GetVehicleVelocity(vehicleid, vel[0], vel[1], vel[2]);
    tempspeed = floatsqroot((vel[0] * vel[0]) + (vel[1] * vel[1]) + (vel[2] * vel[2])) * 151.2;
    return floatround(tempspeed, floatround_round);
}
//onplayerexitveh
    for (new i; i <= 2; i++)
        TextDrawDestroy(TD_Speedo[playerid][i]);