The 10 brands ranked in the Luxury Car Buzz Index include Acura, Audi, BMW, Cadillac, Infiniti, Jaguar, Lexus, Lincoln, Mercedes-Benz and Volvo.

FORBES: Good Times Will Keep Rolling for Luxury Cars

The index found a 12 percent improvement in new car fuel economy, which is reflective of wholesale abandonment of V-8-powered SUVs and trucks in favor of four-cylinder compacts.

FORBES: Cars Now Getting Better Climate Grades

The argument between Porsche and Deutsche Boerse has been raging since 2001, when the car maker was delisted from the MDax index.

BBC: Porsche sues Frankfurt exchange

With that in mind, I asked one of our summer interns, Seth Miran, to come up with a Misery Index of common levies on travel (such as airport rental car excises) in a dozen major U.S. destinations.

FORBES: Taken for a Ride

Contractor Carillion which manages the trust's car parks decided to raise the prices in line with the Retail Price Index.

BBC: Portsmouth hospital parking fee hike criticised