Straight-laced, type-ApersonalityJoyMileshastotakeanunscheduledroadtriptodriveherforgetful, yetopinionated, mother-in-law, Loraine, fromLouisville, KentuckytoSavannah, Georgia.Althoughinitiallyimpatientandfrustrated, JoybeginstorealizehertrueaffectionforLoraineasshetakesafront-seat-viewofhowthisstro...