Buick tries to make Regal stand out

The Regal marks a unique strategy of moving an existing vehicle into alternative segments.

UPDATED: 12/5/17 10:10 am ET - adds detail

Mazda6 adds turbo, high-end trim to stand out in waning sedan market

Mazda, looking to inject new life into lagging sales of the Mazda6 and keep pace with strong redesigned rivals from Toyota and Honda, is updating uts midsize sedan, adding a high-end trim line, optional turbocharged engine and design updates throughout.