Updated 08/21/12 – 4:49 p.m.

CHICAGO (CBS) — CBS is hitting the road on a cross country trip to thank viewers for making us the No. 1 network in the nation.

The “Buzz Bus” rolled into Brookfield Zoo this morning.

CBS 2’s Kris Gutierrez hopped on the bus this morning and caught up with former “Survivor” cast member Burton Roberts. The bus has been on a 15,000 mile, 60 day, 60 market tour of the United States.

The CBS Buzz Bus hit Brookfield Zoo on Tuesday. (CBS)

You can join up with the tour, and see CBS 2’s Steve Baskerville, from 5 p.m.-7 p.m. tonight in Lot A at U.S. Cellular Field before the first-place White Sox play the New York Yankees.

The CBS Buzz Bus and CBS 2’s Steve Baskerville stop by U.S. Cellular Field before Tuesday’s White Sox game against the Yankees. (Credit: CBS)