The Fietsberaad recently published a story about how the ten most likely measures to decrease short car journeys made in towns involve promoting cycling. The ten top measures (with links to examples of each) are as follows:
Note that the examples pointed to are all real. This isn't just hot air, but policy which is already being implemented and which already has demonstrated success in this country.
Of course, it's not just about CO2. There are various other benefits to society, such as lower cost of sickness, and not being so reliant on foreign oil.
Meanwhile, back in the UK, driving is getting cheaper, encouraging higher car usage.