While some of us spend chunks of our day in search of a coffee shop with decent WiFi, others have jumped on the 4G train. But finding a signal outside the Beltway has often been a challenge.

While all your friends were flipping out about the “death grip” on their iPhone 4 or maybe showing off their Evo 4G, everyone’s favorite local cable monopoly quietly began offering 4G wireless service in D.C., Baltimore and Richmond, through a partnership with Wimax provider Clearwire (also known as Clear).

According to Washington Business Journal, fourth-generation wireless internet provider ClearWire has turned on their WiMAX service in D.C., ahead of other East Coast cities such as New York and Boston. Under the “Clear” brand, Clearwire is offering an “On the Go” deal for $40 a month, which you could theoretically hook up to your laptop and be set anywhere in the city that has coverage. For $59.99, you could get a free 3G/4G dongle from…