They have GPS only, with which TW tracks this device/car. No SIM and 3G as far as i know. GPS alone is sufficient for what they are offering (live tracking).
Don't think GPS signals have data transfer capabilities, but giving it an option to insert a SIM somewhere and make it a 3G tab with live internet is the best idea.
Hopefully i will get one next week, due to stock shortage. Now they have excess stock of IGO3, which is still being offered
I installed better component speakers up front, sounded amazing on IGO2, but then due to other issues like reverse camera, i switched to IGO3, now speakers sound worse than stock. Can't wait to get rid of this, too many issues.