Hit the Road — Caroline B. Cooney

Brit has had her driver's license only 11 days when her parents drop her off to stay at her grandmother's house for two weeks while they go on vacation. Little do they know Brit is headed for a three-state road trip with Nannie to pick up her college roommates, Florence, Aurelia, and Daisy, and bring them to their alma mater for their 65th--and most likely final--reunion.

A reluctant recruit at first, Brit is anxious as well as annoyed when she finds herself responsible for her fragile passengers. But things change as she sits behind the wheel up front and listens to "the girls" in the backseat laugh and reminisce about their 65 years of friendship. Inspired by their lifelong loyalty, Brit is willing to do whatever it takes to get the former college roommates to their reunion safely.