Palin rolls out 'vision of the future' in video

(CNN)-What begins with the howl of a grizzly bear and ends with a promise that "our best days are yet to come?"

The promotional video that caps off a roll-out announcement for former Alaska Gov. Sarah Palin's bus tour.

The video, produced by the same duo behind Palin's 2010 "Mama Grizzlies" spot and released Friday, follows Palin's Thursday reveal of her "One Nation" bus tour. The tour begins Memorial Day in Washington, D.C. and travels "up through New England," according to the SarahPAC website.

"We have a vision for the future of our country," the self-proclaimed "mama grizzly" declares in a voiceover narrating scenes of towns and citizens across America.

She singles out Republican founding fathers Washington and Lincoln, as well as her oft-quoted GOP icon Ronald Reagan as figures who have passed down the "enduring truths" of freedom and the Constitution "to you."

The potential presidential contender stirred up speculation about whether she would seek the GOP nomination in 2012 with the "One Nation" tour announcement and news that a pro-Palin feature film would debut in the first-in-the-nation caucus state of Iowa.

And though exact cities on the tour have yet to be disclosed, a Palin source told CNN that stops will be historic sites along the East Coast "that were key to the formation, survival and growth of the United States of America," including the Civil War battlefields at Gettysburg and Antietam, Philadelphia - to visit the Liberty Bell - and a visit to the first-in-the-nation-primary state of New Hampshire.

Perhaps hinting at her future plans, Palin assures, "We know our best days are yet to come."

Listen to the Political Notebook as Candy Crowley, anchor of CNN's State of the Union, and Bob Costantini discuss Sarah Palin's bus tour and Tim Pawlenty's truth comments. Plus, Memorial Day weekend "Poli-Synch."