Happy birthday! 40 years ago this Grand Prix SJ rolled off the assembly line in Detroit. The last car that my grandfather Earl Case ever owned. And — having launched a successful Pontiac and Buick dealership in rural Illinois — Grandpa loved his cars. I bought it from my grandmother 10 years ago (she cut me a deal), and it’s still running beautifully with only 63k miles. Grandpa’s dealership – once known as Case Motor Sales – exists to this day as Route 1 Chevy Buick in Momence.