There are purple bikes in our Geo Quiz today.

The purple bicycles are an idea that Brian Mullin came up with. He's on the Buzz Marketing Team at Yahoo.

Yahoo! Bike goes to Tanzania with Baisikeli from Henrik Mortensen on Vimeo.

The bikes are designed to introduce people to different parts of the world.

Brian Mullin: "You're not out riding a purple bike right now, you're in Silicon Valley California. Fill us in a bit...are these purple bikes kind of like my old green huffy with the tassels only their purple?"

Listen to interview:

Brian Mullin is Senior Director of the Buzz Marketing Team at Yahoo in California. His favorite purple bike is in Tanzania, the answer to our Geo Quiz.