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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.

Bad-tempered driving increases over winter

We’re officially a nation of grumpy drivers – not helped by the bad weather and the end of Christmas festivities, a survey has revealed. Halfords Autocentres carried out a study about how winter affects motorists and found that experiences of impatient, aggressive and inconsiderate driving increase at this time of year. On Bing: see pictures of road rage British drivers ‘lack common courtesy’ Rory Carlin from Halfords Autocentres: “It seems that the festivities take their toll on the nation’s road manners and tempers flare leading to less kindness and unselfish behaviour from some motorists.” 23% of respondents felt that unfriendly and bad tempered behaviour was a major issue during the winter months, while a fifth said there was a rise in aggressive and impatient driving.

Ferrari apologizes for employee filmed doing donuts in China

Ferrari issued an apology on Wednesday after one of its employees was filmed doing donuts in a 458 Italia 20th Anniversary Special Edition on the 600-year-old Ming Dynasty wall in the city of Nanjing. The online community has been up in arms, with users of Wiebo, China's version of Twitter, being allowed to complain the loudest. Much of the anger was directed at the Chinese government, which rented the wall for the occasion at a cost of $12,000.