INDIANOLA, IA - JANUARY 02: Democratic presidential candidate Sen. Hillary Clinton (D-NY) speaks with the media on the media bus after an event at the First United Methodist Church January 2, 2008 in Indianola, Iowa. With the Iowa caucuses one day away the race has tightened in both Iowa and New Hampshire. (Photo by Joe Raedle/Getty Images) Democratic presidential candidate Sen. Hillary Clinton (D-NY) speaks with the media on the media bus after an event at the First United Methodist Church January 2, 2008 in Indianola, Iowa. (Photo by Joe Raedle/Getty Images)

WASHINGTON (CBS DC) — As Hillary Clinton tours the country in promotion of her new memoir, she’ll be trailed by “The Hillary Bus,” launched by an organization that’s been gathering support for her potential 2016 presidential bid since last year.

Announced through Twitter earlier Wednesday, “The Hillary Bus” is “getting ready to fire up the engine!” as it follows Clinton to book tour promotions and Democratic fundraisers throughout the summer. The PAC organization operating the bus, “Ready for Hillary,” has amassed over 134,000 followers on Twitter and is using the launch of Hillary’s new book next week, “Hard Choices,” to start the ignition to her still-unconfirmed 2016 campaign for president.

“We are excited to announce The Hillary Bus! Follow @TheHillaryBus for updates!” the group tweeted. The Ready for Hillary PAC described the bus as a “mobile advertisement allowing our organization to reach new supporters in every corner of America,” Buzzfeed reports. The organization’s website declares: “Get involved. Grow the movement. Show Hillary – millions are Ready!” The Ready for Hillary PAC has not been officially authorized by Clinton and the schedule for the bus has not been announced by the fundraising organization. However, Clinton’s promotional events for her book provide the framework for the “coast-to-coast” bus tour announced by the organization last year. The national tour will reach “every corner of America,” the website declares. Clinton’s national book tour begins in New York on June 10.

Clinton’s “Hard Choices” gives an “inside account” of her challenges as the 67th U.S. Secretary of State under President Barack Obama – who defeated her in the 2008 Democratic primaries.

“All of us face hard choices in our lives,” Clinton writes at the start of this personal chronicle of years at the center of world events. “Life is about making such choices. Our choices and how we handle them shape the people we become.”

In past statements, Clinton herself said that she will make a decision on her prospective 2016 presidential run by the end of the year.