General Motors caught testing next U.S. president’s limousine

 (Glenn Paulina/KGP Photography) Spies have been tailing the presidential limousine. Not President Obama’s, but the one being prepped for his successor. Testing of the next generation “Beast” has accelerated in recent weeks at General Motors Proving Ground in Milford, Mich., according to the KGPPhotography shooters who’ve caught it on camera. It’s technically a hush-hush project[…]