The Cadillac CT5 may be the automaker's best midsize sedan yet.

Remember the Cadillac CTS? The name stood for Cadillac Touring Sedan, and the original CTS marked a dramatic turning point for Cadillac design and engineering. Then, the automotive executive who came up with the Audi and Infiniti alphanumeric nameplates applied similar logic when he arrived for a short stint at Cadillac. That’s when the CTS became the CT5, which doesn’t stand for anything except “midsize Cadillac sedan.“ That’s too bad, because this car would have been remembered as the best CTS yet. Instead, people are like: “C-T what now?”