First of all thanks for your reply.
Secondly theres one young driver who has many excuses for driving over the limit. Done my best but he won't listen, but anyway... Do you know what that device called?
I've seen one on eBay which is tracker kit with speed limiter but it cost a lot.
Im looking for some standalone device.
If you or any other guys know anything about them please tell me or bring your points forward.
Thanks