Mercedes launches Mythos series with AMG PureSpeed

Mercedes-Benz has launched the AMG PureSpeed as the first model in its new Mythos series of low-volume special editions The AMG PureSpeed is based on the SL 63 and shares that car’s 577-hp twin-turbocharged 4.0-liter V-8 Production of the AMG PureSpeed will be limited to 250 units worldwide Mercedes-Benz has formally introduced its Mythos series…