It is so cheap makes me wonder if it is actual GPS/GSM unit or just GSM triangulation. Mini GPS Tracking GSM SMS GPRS Network Vehicle Motorcycle Bike Monitor Tracker | eBay
I ordered one but I never recieved it. When I chased them up they said they couldn't find it in their warehouse :frown: :wink:
It doesn't look like a bad idea, if it is GPS based, but its very cheap if it is! Worth a punt at £13 I reckon!