My dad is testing out a unit at the moment (don't think it's on public sale yet) and it's pretty impressive. It monitors gas and electricity (including a breakdown of individual points to an extent) and wirelessly broadcasts it to a decent colour display. He can then download the stats to his...

http://www.thisislondon.co.uk/standard/article-23613131-details/More+%27gas-guzzler%27+drivers+to+pay+extra+for+parking+permits/article.do More 'gas-guzzler' drivers to pay extra for parking permits Katharine Barney, Evening Standard A SCHEME to penalise "gas-guzzlers" with higher parking...