Interesting phrase inspired by the growth in electric vehicles.

Range anxiety, as described by Mr. Weber, is the nagging worry that the electric vehicle you are driving is running out of battery charge.

I wonder how many people experience the same anxiety getting on a plane with their notebook, knowing they have a project or an inbox full of email to get through (or better still, five episodes of Lost to catch-up on). Not me. I’ve got a Dell XT Tablet with the extended battery. OK, makes my notebook a little thicker and heavier but I rarely run out of juice. It’s brilliant.