public UpdateSpeed (vehid)
{
    new id = GetVehicleInfrontID (vehid);
    if (id < 0)
    {
        for (new i = 0; i < MAX_PLAYERS; i++)
        {
            PlayerTextDrawSetString (i,RadarHud, "Speed:-");
            PlayerTextDrawSetString (i,VehicleModel,"Car Model:-");
        }
    }
    else
    {
        new str[32], Float: velocityX, Float: velocityY, Float: velocityZ;
        GetVehicleVelocity (id, velocityX, velocityY, velocityZ);
        new speed = floatround (floatsqroot (floatpower (velocityX, 2) + floatpower (velocityY, 2) + floatpower (velocityZ, 2)) * 187.666667, floatround_round);
        for (new i = 0; i < MAX_PLAYERS; i++)
        {
            format (str, sizeof (str), "Speed: %d", speed);
            PlayerTextDrawSetString (i,RadarHud, str);
            format (str, sizeof (str), "Car Model: %s", VehicleModel22 [GetVehicleModel (id) - 400]);
            PlayerTextDrawSetString (i,VehicleModel, str);
        }
    }
    for (new i = 0; i < MAX_PLAYERS; i++)
    {
        if (IsPlayerInVehicle (i, vehid))
        {
            PlayerTextDrawShow (i, RadarHud);
            PlayerTextDrawShow (i, DashCamText);
            PlayerTextDrawShow (i, VehicleModel);
        }
    }
    return 1;
}

CMD:dcam(playerid, params[])
{
    if(DashCamActivated[playerid] == false)
    {
        if(IsPlayerInAnyVehicle(playerid))
        {
            new vehid = GetPlayerVehicleID (playerid);
            if(IsACop(playerid))
            {
                if (VehRadarID [vehid] == -1) return 1;
                {
                    CheckingSpeed [vehid] = SetTimerEx ("UpdateSpeed", 100, 1, "d", vehid);
                    PlayerTextDrawShow (playerid,RadarHud);
                    PlayerTextDrawShow (playerid,VehicleModel);
                    PlayerTextDrawShow (playerid,DashCamText);
                    DashCamActivated[playerid] = true;
                }
            }
        }
    }
    else
    {
        DashCamActivated[playerid] = false;
        new vehid = GetPlayerVehicleID (playerid);
        if(CheckingSpeed[vehid] > 0)
        {
            {
                KillTimer (CheckingSpeed [vehid]);
                CheckingSpeed [vehid] = -1;
                PlayerTextDrawHide (playerid, RadarHud);
                PlayerTextDrawHide (playerid, VehicleModel);
                PlayerTextDrawHide (playerid, DashCamText);
            }
        }
    }
    return 1;
}