More incentive to walk

As the sun comes out and we have the year's second wave of guilt at out gluttony (it was too cold to exercise more at new year, but this time...) take a look at walkit.com ...you put your start and end destination in and it gives you a route, an estimated time to walk it, calories burned and the all important carbon saving you'll make by walking.  It's quite scary how much CO2 is used in a 4 mile car journey...