Porsche readying most extreme Panamera to date

Hardcore variant of four-door saloon seen testing with chunky rear wing; seems to use PHEV powertrain Porsche looks set to launch a more extreme, track-focused derivative of the Panamera saloon. The most hardcore derivative to date has been the 760bhp Turbo S E-Hybrid, which still closely resembles the standard 348bhp Panamera despite the high output of its V8-centered PHEV powertrain. But