If you're watching a modern IndyCar race, you have have noticed the tubes attached to the driver's helmets while they drive ...

It's not your imagination. Dirt bike helmets look quite diferent from motorcycle helmets, and for lots of good reasons. Here's what sets them apart.

After my nod of approval, Ulrich did what Superbike riders do: unleashed over 200 horsepower with a turn of a wrist, sending us down Laguna Seca’s first straightaway.