Lotus has unveiled the Evora 400, described as the "fastest and most powerful production Lotus ever." And while the British automaker calls it a brand new supercar, it's really an evolution of the Evora series, featuring an engine upgrade and a revised interior. The front end, highlighted by bigger air intakes and LED daytime running lights, was redesigned for a more aggressive, sleeker appearance, while out back there's a ventilated rear bumper, sporty diffuser and a "three-element" rear wing. Under the hood is a supercharged 3.5-liter V6, generating 400 bhp and 302 lb-ft of torque. It's mated to an improved six-speed manual or optional six-speed automatic gearbox, all of which results in a 0 - 60 mph sprint time of 4.1 seconds and a top speed of 186 mph. Look for the Lotus Evora 400 to go into production this summer, with the first European deliveries set for August. A North American release follows in the fall, where the car will debut as a 2016 model.