Walk, no drive, no walk, no drive, no walk this way

As if just being alive wasn't issue enough, what with all the water and electricity and fossil fuels I use (it gets really bad when I start trying to figure out how much energy it took to make and deliver my treasured stroller), now a posting on Grist's blog tells me walking is possibly less efficient than driving.

How am I ever supposed to figure out the right way to live?

But even I, in all my science-challenge thinking, know that it's more efficient to walk than it is to drive to the gym. So I've got that covered.

Oh crap. I forgot. I do that too.