Cutting car use

I’ve kept seeing signs along the roads recently encouraging drivers to reduce their mileage by 5 miles a week to help the environment. As a result I have been giving up unnecessary car journeys for Lent, albeit with a rather loose definition of what I consider “unnecessary” (basically if I can do the journey almost as easily by public transport, then I should avoid using the car where possible). It’s helped not having any babies due until April which has meant I can use the tube when I’m having an office day (it’s not really practical when I’m doing visits).