An estimated 44.2 million Americans are expected to travel around this Fourth of July, which is causing traffic on travel websites to soar. One of ’em: KAYAK, a service that allows customers to search for the best travel deals out there. Co-founder Steve Hafner stopped by to talk to us about the company’s relationship with Google and how it tries to help users make smarter traveling choices. Afterwards, we’ll chat with inventor Kevin Wu about his new app, FireFly, which enables you to shoot off fireworks.

An estimated 44.2 million Americans are expected to travel around this Fourth of July, which is causing traffic on travel websites to soar. One of ’em: KAYAK, a service that allows customers to search for the best travel deals out there. Co-founder Steve Hafner stopped by to talk to us about the company’s relationship with Google and how it tries to help users make smarter traveling choices. Afterwards, we’ll chat with inventor Kevin Wu about his new app, FireFly, which enables you to shoot off fireworks.