A colleague asked me about GPS tracking yesterday because he's just bought a motorhome & was considering having a Tracker fitted. It transpires that there wasn't enough reduction in insurance cost to cover the installation/yearly subscriptions and because it wasn't a proviso of the insurance that a Tracker is fitted we got looking at options for tracking the vehicle yourself and found this;
GPS smart tracker
It's basically a GPS unit which houses a SIM card for data access so that you can request a location from it by text message and it will reply with longitude & latitude accurate to within 5 metres.
Obviously you need to keep the SIM card topped up with credit (if pay as you go) and it needs to be in a coverage area to be able to receive and send the texts but it's a neat idea if you wanted to fit a DIY vehicle tracker. Combine the GPS with a service such as Followus
and you can track it even if it doesn't have a GPS signal if it was indoors for example.
Has anyone done anything similar?