car or no car...

I am now in a fortunate position where I can make a choice if I should use (a good) public transport or not. its no brainer from a health perspective that public transport all the way. However as with all aspects of life there is challenges and with challenges comes temptation. I am faced with a situation where its bloody freezing outside (for April thats a joke! !!) should I drive to where I am going or not. ..
I think the best advice for anything faced in this ordeal ( exaggeration obviously) is planning,  planning , planning.  also weighing up the cost . this is so similar to healthy eating and temptation for the no so healthy,  so planning how to over come it is very important.