hmmm my phone has a option that does this same thing for free....
LG Ryhtem. how ever you spell that.
just select USB modem plug it in and go.
On a carPC forum I have heard of people using cheap pay as you go phones that have unlimited data plans to add internet to carPCs. Not fast and you may ask why have constant internet in a car but if/when I setup my carPC I'd have it set to pull weather and traffic conditions via the internet.
It can be fast, it just depends on the phone/network... I regulary exceed 3mbps with my phone.
A live internet connection makes travelling so much nicer. A few months ago, we drove home from Edmonton (about 2 hours), and my wife played WoW all the way home on the laptop using an aircard (mobile broadband).
\m/ d(-_-)b \m/
R9 290X+Kraken+Corsair H90, Xeon 5649@4ghz, Asus P6T-WS Pro