“I can’t. I can’t open this car door,” wails seven-year old Samantha, hand tugging awkwardly – ineffectively – on the inside handle of her parents’ bulky old Suburban station wagon. I was in Florida for a weekend visit from Chicago. We’d spent the morning at Lowry Park Zoo. Although it wasn’t quite naptime, both of us were a little worn from an overabundance of orangutans and ostriches on a hot tropical day.