If you are like the average commuter you spend more than 100 hours a year going to and from work. This is roughly the same time a college student spends in class during a full quarter. If you take advantage of the time you can expand your education, follow marketing trends, or learn about novel ideas.
One of the best ways to learn on the road is through audio books or informative podcasts (check out my podcasts picks on the right). Almost every great business book is offered in audio format. There are also many great lecture courses offered via podcast on iTunes U. Write down all the great points in a notebook or on a word file so that you refer back to all the important stuff you learn.