About the Video

What do you get when you cross a treadmill with a bike? See how some gadgets are taking bikers on a wild ride.

Related Content

Helpful Tips and Hints

In a fall or collision, a bike helmet becomes a "crumple zone" that absorbs the impact so your head doesn't take the full blow. Replace your helmet when it has:

• Large cracks in the outer shell


• Soft spots in the outer shell


• Soft, crumbly or badly cracked Styrofoam


• Badly frayed straps

For More Information

Bike buying tips for the best fit and workout

Choose the best helmet for fit and safety – from the Bicycle Helmet Safety Institute.

Spinning, touring or biking with the kids – calculate the calories burned on a bike – from Caloriesperhour.com.