More about sharing cabs

I posted a couple of weeks ago about how I shared taxis in south west London many years ago, prompted by a post on the Sharing Solution.  Shareable.net has a further post about taxis sharing and mentions an iphone application called ridepenguin which is designed to enable this.  Great step forward.  So far it is only based in Seattle and Las Vegas, but I hope this rolls out quickly.  I can see even “I never share anything” City folks using this in London when it’s raining and cabs are like gold dust.