"Many world governments have a long-standing target for car manufacturers to reduce average CO2 emissions for their vehicles. The European Union target is 120g/km by 2012 and longer term to 80g/km by 2020. The view of the industry has been that this is very challenging and unlikely to be met via conventional approaches alone. Indeed, the 2012 target already represents a slip from an original 2005 target date. As most manufacturers will not be able to meet the 2012 target, further slippages (possibly to 2015) and concessions (exclusions for heavier vehicles) are already on the table.

So what has all this got to do with GPS? The answer is that GPS is one technology that might be able to help reduce vehicle emissions. How might this work?"

This question will be answered by Andy Walker, when you reed his full post in the Spirent Positioning Blog.