If you're driving and see a Stormtrooper on the side of the road, don't be alarmed -- it's only Kevin Doyle, and he's walking to honor his wife's memory.

Doyle's wife, Eileen, died from cancer in 2012. Both were huge "Star Wars" fans and loved to draw. So, Doyle, who is a member of the 501st Legion, decided to combine these two elements into one loving gesture.

Doyle is walking to San Diego -- in full-on Stormtrooper gear -- to raise money for children with cancer. He began June 6 at Rancho Obi Wan in Petaluma, and he's aiming to arrive at ComiCon on July 9. He will also donate so-called chemo bags, which are bags filled with goodies like coloring books, plush toys and blankets, to children with cancer. The items in the bags were all inspired by the art and characters Eileen drew.

The "Stormtrooper with a cause" took time out while in Big Sur to give an update on how his journey has progressed.

You can follow Kevin Doyle's 501 Mile Walk on

and Facebook.