My Way or The Highway by Trish Doller
(no cover yet)
After getting caught cheating on her U.S. History final, seventeen-year-old Jacey Lowell will not be spending three weeks in Europe with her friends. Instead, she's been sentenced to two weeks aboard the eXtreme Teen Tour charter bus, which offers "an unforgettable adventure at some of our nation's greatest historical landmarks". (Or so the brochure says.)
Jacey has no interest in bonding with her eXtreme Teen tour mates and even less interest (yes, it's possible) in seeing historical sites. But when the tour (and her luggage) leaves her behind in New York City, Jacey's boring bus ride turns into a cross-country adventure that takes her places she's never been before.