A black Stetson is on Tim Sheffield's mind, though not currently on his head.

Sheffield's favourite cowboy hat is in the back of a grey Chevy Volt alongside a handmade, cow-themed jacket that the country musician from Kingston, Ont., wears onstage while performing.

The Chevy Volt, the cowboy hat and the tailored jacket are all inside the downtown Ottawa parking garage that collapsed on Wednesday.

That's a problem for Sheffield and others whose vehicles are stuck inside the damaged structure, and w…