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Frankfurt Motor Show 2013: stand-by-stand A-Z

The 2013 Frankfurt Motor Show opens to the public 12-22 September, following two press days on 10-11 September. Here’s an A-Z stand-by-stand run down of what you can expect. MSN Cars will be bringing you full and complete coverage of the event, including written reports, live picture galleries and videos – so if you can’t make it in person, we will keep you completely up to date.

Driven: Mazda RX-8

The two most obvious elements of its unusual make-up are its rotary engine and rear-hinged rear doors with integral B-pillars. What became clear during our week with the RX-8 was how these two aspects of its design form the basis of many other unique qualities... Sports coupe and GT coupe The rotary engine of the RX-8 has a very distinct power delivery that is a defining part of the car's character, but it is also a very small lump of metal compared to a similarly powerful conventional reciprocating piston engine, enabling more of the car's overall length to be devoted to cabin space.

Koenigsegg backs out of deal to buy Saab

Swedish exotic-car maker Koenigsegg Group has canceled plans to buy Saab from General Motors. GM announced that the deal was off on Tuesday and gave no reason why the deal fell apart, nor did the automaker say what would happen to Saab. In a statement, GM CEO Fritz Henderson said: "We're obviously very disappointed with the decision to pull out of the Saab purchase.