Silly Question lol

that card, or creating your own wireless network using a laptop with an aircard, your own wireless router in the truck and your Xbox would work, but most data agreements from the phone companies (even the ones that say unlimited!) have a 5 gigabite limit per month. I'm not familiar with what an Xbox would use.

 

I have something similar to that, but a little less expensive. All you really need is a wifi card, a computer, a wireless adapter for the 360 and a ad-hoc connection setup between the two.

 

If you already have a usb modem you can use this to create a hotspot for the xbox.
http://www.cradlepoint.com/products/ctr350-mobile-broadband-router
Here is the mobile version
http://www.cradlepoint.com/products/ctr500-mobile-broadband-router

 

Your laptop isn't using data if you aren't browsing/downloading. It basically acts as the router between your cell card and the Xbox.

 

I posted some links to reviews but I got a message that it had to be approved by the Mods so it may not make it. Google is your friend.I put in the product name and found several reviews right away.

 

I did this with a laptop and a playstation 2. I used the wi-fi at Flying J ( you could use an aird card as well) and a crossover ethernet cable, which I plugged from the laptop to the back of the playstation 2, then turned on internet connection sharing. It worked great. I've never owned an X-Box, so I don't know if it has a standard ethernet plug on the back like the playstation 2 did.