I’ve had a soft spot for Puerto Rico since taking a work trip there four or five years ago. I’d heard some negative things about the island, which many people seemed to think of as a third-rate part of the Caribbean, but I found much to enjoy — the natural beauty of its coastlines and rainforests, the charming and lively capital of San Juan, not to mention the mofongo and the rum. Fending with the traffic, however, was hardly a highlight. “People complain about traffic jams, but they see congestion as a sign of progress,” an environmentally minded priest told me at the time. Now it seems that attitude may be changing for the better.