6 ways to cut car commuting costs

Biking to work is an option that will earn a big "thank you" from your wallet and cardiovascular system. And it's getting trendier.

In fact, the U.S. Department of Transportation recently announced the government will give bicycles the same importance as cars when it comes to transportation planning and selecting projects that will receive federal funding.

"There has been a lot of attention recently on bicycles," Ennis says.

Biking to the workplace is not for everyone. It makes the most sense for those who are in good physical health and who live relatively close to the office. In addition, it's important to have an on-site facility where you can "freshen up" before beginning the workday.

Those who pedal to work may benefit from improved physical and mental health -- you can use your commute time to clear your head and reduce stress levels. Plus, you'll be able to check your daily workout off the list, which translates to more free time to devote to other interests and activities.