Yesterday, I complained in my blog (compblogged? blained?) that the MBTA seemed unlikely to get around to actually wiring the commuter rail cars with Wi-Fi as they’d previously announced. Well, I was wrong. This very morning, 2 cars on my train had been transformed into moving orange billboards for AT&T Wi-Fi. Once on board, I whipped out my MacBook Air and connected to the network and tried to load a page. I waited. And waited some more. And then… the page finally loaded. Having free Wi-Fi is good, but if it’s always this dog-slow, I will still be considering a USB modem for my Mac. I get better speeds tethering my Mac to my iPhone 3G along the same route than what I saw on the train’s Wi-Fi network this morning. WTF?