The same amount of time it would have taken her to buy diapers = same amount of time for bathroom break or two on a 1,000 mile car trip. Um...unless she already had adult diapers at her house. Ew.

Black trenchcoat aside, she was probably ID'd on stench alone.
_________________________
"What I do know is that if Karen Carpenter and Mama Cass Elliot had shared that sandwich they'd both be alive today." -Michael K