Things that should exist: Walking meetings

Wouldn't it be cool to hold small meetings of three or four people by taking a walk instead of sitting in a windowless, fluorescent-bathed conference room?  Walking relaxes me, clears my mind and spurs creativity.  Being outside in actual sunlight is healthy, refreshing and makes the rest of the day much easier.  Holding a walking meeting would be like taking a break, except that you'd be working.  Sure, you wouldn't be able to take notes, but my experience is that you usually come out of meetings with three or less new things to do anyway.  Walking meetings should definitely exist.

Update: John at Uneasy Rhetoric and John at RT Rider were both kind enough to continue and expand on this discussion by linking to my post.