The CBS Buzz Tour Bus, traveling cross country all summer thanking fans for making CBS "America's Most Watched Network" is featured on THE TALK, Wednesday, July 18, 2012. Photo: Sonja Flemming/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

The CBS Buzz Tour Bus, traveling cross country all summer thanking fans for making CBS "America's Most Watched Network" is featured on THE TALK, Wednesday, July 18, 2012. LtoR: Sheryl Underwood, Sara Gilbert, Alan Thicke, Aisha Tyler, Julie Chen, CBS Buzz Tour ambassadors Alex Boylan (THE AMAZING RACE) and Burton Roberts (SURVIVOR: PEARL ISLANDS) Photo: Sonja Flemming/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

The CBS Buzz Tour Bus, traveling cross country all summer thanking fans for making CBS "America's Most Watched Network" is featured on THE TALK, Wednesday, July 18, 2012. LtoR: CBS Buzz Tour ambassador Alex Boylan (THE AMAZING RACE), Sheryl Underwood, Sara Gilbert, Aisha Tyler, Julie Chen, and CBS Buzz Tour ambassador Burton Roberts (SURVIVOR: PEARL ISLANDS) Photo: Sonja Flemming/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

The CBS Buzz Tour Bus, traveling cross country all summer thanking fans for making CBS "America's Most Watched Network" is featured on THE TALK, Wednesday, July 18, 2012. LtoR: Sheryl Underwood, CBS Buzz Tour ambassador Burton Roberts (SURVIVOR: PEARL ISLANDS), and Julie Chen Photo: Sonja Flemming/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

The CBS Buzz Tour Bus, traveling cross country all summer thanking fans for making CBS "America's Most Watched Network" is featured on THE TALK, Wednesday, July 18, 2012. LtoR: Sara Gilbert, Aisha Tyler, and CBS Buzz Tour ambassador Alex Boylan (THE AMAZING RACE) Photo: Sonja Flemming/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

The CBS Buzz Tour Buss, Stops in front of CBS Corporate headquarters "Blackrock" building in New York City Wednesday June 27, 2012. Photo: Jefrey R. Staab/CBS ©2012 CBS Broadcasting Inc. All Rights Reserved

On Wednesday, July 4, the “CBS Buzz Tour” will officially burst onto the scene from Boston during CBS’s live broadcast of the “Boston Pops Fireworks Spectacular.” The CBS star-branded and mobile studio-equipped “CBS Buzz Tour” bus will bring network ambassadors, activities and giveaways to 60 markets in 60 days as a thank-you to the millions of loyal fans who continue to make CBS America’s Most-Watched Network. CBS reality star veterans Alex Boylan (“The Amazing Race”), left, and Burton Roberts (“Survivor: Pearl Islands”) will spearhead the on-the-road fan activities and will also engage viewers from anywhere in the U.S. throughout the tour with “Inside Buzz” CBS.com webisodes, blogs and social media contests and posts. Photo: Jeffrey R. Staab ©2012 CBS BROADCASTING INC. All Rights Reserved.

Starting July 4, the CBS star-branded and mobile studio-equipped “CBS Buzz Tour” bus will bring network ambassadors, activities and giveaways to 60 markets in 60 days as a thank-you to the millions of loyal fans who continue to make CBS America’s Most-Watched Network. CBS reality star veterans Burton Roberts (“Survivor: Pearl Islands”), pictured, and Alex Boylan (“The Amazing Race”) will spearhead the on-the-road fan activities and will also engage viewers from anywhere in the U.S. throughout the tour with “Inside Buzz” CBS.com webisodes, blogs and social media contests and posts. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

Starting July 4, the CBS star-branded and mobile studio-equipped “CBS Buzz Tour” bus will bring network ambassadors, activities and giveaways to 60 markets in 60 days as a thank-you to the millions of loyal fans who continue to make CBS America’s Most-Watched Network. CBS reality star veterans Alex Boylan (“The Amazing Race”), pictured, and Burton Roberts (“Survivor: Pearl Islands”) will spearhead the on-the-road fan activities and will also engage viewers from anywhere in the U.S. throughout the tour with “Inside Buzz” CBS.com webisodes, blogs and social media contests and posts. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

Starting July 4, the CBS star-branded and mobile studio-equipped “CBS Buzz Tour” bus will bring network ambassadors, activities and giveaways to 60 markets in 60 days as a thank-you to the millions of loyal fans who continue to make CBS America’s Most-Watched Network. CBS reality star veterans Alex Boylan (“The Amazing Race”), right, and Burton Roberts (“Survivor: Pearl Islands”) will spearhead the on-the-road fan activities and will also engage viewers from anywhere in the U.S. throughout the tour with “Inside Buzz” CBS.com webisodes, blogs and social media contests and posts. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting, Inc. All Rights Reserved.

Starting July 4, the CBS star-branded and mobile studio-equipped “CBS Buzz Tour” bus will bring network ambassadors, activities and giveaways to 60 markets in 60 days as a thank-you to the millions of loyal fans who continue to make CBS America’s Most-Watched Network. CBS reality star veterans Alex Boylan (“The Amazing Race”) and Burton Roberts (“Survivor: Pearl Islands”) will spearhead the on-the-road fan activities and will also engage viewers from anywhere in the U.S. throughout the tour with “Inside Buzz” CBS.com webisodes, blogs and social media contests and posts.

Starting July 4, the CBS star-branded and mobile studio-equipped “CBS Buzz Tour” bus will bring network ambassadors, activities and giveaways to 60 markets in 60 days as a thank-you to the millions of loyal fans who continue to make CBS America’s Most-Watched Network. CBS reality star veterans Alex Boylan (“The Amazing Race”) and Burton Roberts (“Survivor: Pearl Islands”) will spearhead the on-the-road fan activities and will also engage viewers from anywhere in the U.S. throughout the tour with “Inside Buzz” CBS.com webisodes, blogs and social media contests and posts.