Kevin Maney wants to know why there isn't wifi on Amtrak. The question is symptomatic of a much bigger problem, which is that transportation infrastructure in general is decidedly unfriendly to those of us in the laptop classes. Virgin America, when it starts flying next month, will be the very first US airline to provide power for laptops in coach, and there's not much sign that anyone else is minded to follow suit. Boeing's Connexion wifi service was shut down at the end of 2006. And yesterday, I discovered what happens when you try to check in online for a US Airways flight which has been cancelled. The US Airways website does not tell you that your flight has been cancelled. Instead, it tells you that online check-in is not available, and that you have to travel to the airport in order to check in there.