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2015 BMW M4 Convertible debuts: drop-top fun priced from $73,425

The 2015 BMW M4 Convertible made its official debut at the New York auto show yesterday. While the details of the high-octane hardtop didn't exactly catch us off-guard (see our full breakdown here), we now know how much it'll cost to feel the wind in your hair as you launch from 0-60 mph in 4.4 seconds: $73,425, to start. Complete pricing will be available closer to the M4 Convertible's sale date, which is “late summer” 2014, according to BMW.

Porsche mulls smaller SUV, sports car

Porsche may develop a small SUV and a sports car smaller than the Boxster as it aims to double worldwide sales in the next three years. Bernhard Maier, head of sales and marketing at Porsche AG, confirmed that the company is looking into smaller and less expensive models “but we have taken no decision so far.” The small SUV has been code-named “Cajun”--short for Cayenne Jr. The success of the Cayenne SUV has given Porsche confidence to “investigate if there are other opportunities,” Maier said.

Chevrolet SS to be the name of brand's performance sedan, NASCAR entry

It's back. Big, bad and with four doors, rear-wheel-drive performance will return to the Chevrolet sedan lineup in 2013, simply called the SS. Chevrolet confirmed on Thursday that “SS” will be the name of its next sporty four-door, and it will be used by NASCAR Sprint Cup teams starting at the 2013 Daytona 500.