What I use
We have a subscription for flying J with their WiFi. We got in Early and it was only $99.95 for a year. In a word, it is Excellent. Good signal strength and fast (11 mb) connection. Currently it is at most of the Flying J's in the US. IN addition, they have announced that they are going to add hot spots to a lot of interstate exits that there are no flying Js also.
Here is a map:
http://www.tonservices.com/images/wifi/map.gif
Now thats all well and good, but what if you are nowhere near a Flying J? Well, truckstop.net is also offering WiFi at Pilots and other Fueling stops. I am not impressed with their service however. At least 5 times in January I have been to a place where I can get a signal, but have no way to purchase a subscription. When I go inside and ask about the cards for a one month subscription, I get blank looks, and people telling me there are modem jacks in the dining area. When I explain they have a wireless connection there, and ready, they look at me like I am nuts.
When I call the support number and explain to the tech where I am, and that I am indeed connecting to the "truckstop.net" signal, and would like a subscription, they always tell me that it is not installed where I am. Well, I am in the truck, and connection, I know damn well its installed and up. If the company can't even keep track of it's locations, well, I don't think I wanna give them any of my money.
Another nice thing I have found, is that almost no matter where I am, I can plug my external wireless antenna into the notebook, and if I drive 5 blocks, I can find an unencrypted signal to get onto. This can be anything from cities providing wireless in park areas, to businesses or homes that have wireless installed and not secured. All you need is a wifi "sniffer" like Boingo (which comes with a lot of WiFI cards). Run BOingo, and it will give you a list of all teh wireless signals it is getting. You then select one and try to connect. Usually 1/2 the time I get a sucsessful connection. Case in point. Currently I am in Addison, IL. I have stopped at a shopping center, hooked my antenna up, and got 3 wireless networks. Two of the three I can connect to. The WiFi signal I am using to send this... is free.
So, there you have it. My suggestion would be skip a cell phone company, pay the current annual fee of $199 for a year at flying J, and try your luck sniffing out signals wherever you are.
Aviator