Tesla has announced new versions of its electric Model S and Model X cars are among the fastest cars in the world with a longer battery range. Tesla claims that its Model S P100D is the third-fastest-accelerating production car in the world after the LaFerrari and Porsche 918 Spyder, going from 0-60 mph in 2.5 seconds in a driving mode called “Ludicrous”. The acceleration is slightly slower than the LaFerrari and Porsche 918 Spyder, but those are both limited run, million-dollar two-seater cars. The new Model S has four doors, can seat five adults and two children and has “exceptional cargo capacity”. Tesla’s Ludicrous mode is possible thanks to an advanced fuse system that allows the battery to fire out more power, which means more speed. The Model S P100D comes with a 100 kilowatt hour battery, the largest Tesla has offered, which allows the vehicle to travel 315 miles on a single charge –...