When Jim DiGregorio gushes about how much he digs his sparkling, and rare, 1959 Buick LeSabre convertible, you know the car must be special. It has some big tracks to follow in DiGregorio’s garage, but a totally original 1959 ragtop with just 32,000 miles and über-rare, three-on-the-tree is certainly something to get worked up about, no matter what else you’ve owned previously.