By logging on to www.targetneutral.com, drivers can calculate how much CO2 their car emits, find out how to reduce that figure and also learn more about global projects to minimise CO2. It is easy to participate, and involves a cash contribution to the programme, usually around £20 per year, depending on your vehicle, gas mileage and fuel consumption. ... through the scheme, all of BP's UK fuel tankers will now be CO2 neutral. Targetneutral gives drivers an easy, affordable way to play their part in balancing the equation.