If possible coordinate your movements with a friend or colleague and share a lift. Find someone at your workplace to share with, or consider setting up a scheme there. Or go one step further and share the costs of running a car with a few friends.
Commonwheels is a not-for-profit car club which helps cut pollution and the number of cars on the road, by providing shared access to low-emission vehicles. If there isnt a Commonwheels car available where you live, talk to Commonwheels about setting up there. See the website or call 01132450158 for more information.