You are welcome.
Yar, i have only used WiFi connectivity in my car, so far.
But my cousin is using this "PTCL EVO CharJi" device in his Grande, on daily basis. This CharJi device broadcasts a WiFi access point, you can simply connect your Info-Sys to this WiFi and then you are connected to the internet.
For the other 3G enabled usb sticks, you just have to install "PPP Widget" application from Playstore and then you can connect any 3G enabled usb to your Info-Sys.
I hope it helps.