The windblown puddle of mercury known as the Infiniti Essence concept car shown at this year's Geneva show tells volumes about where Nissan's luxury division is headed both stylistically and technically. The twin-turbo 3.7-liter direct injection V-6 in the Essence will debut, sans turbos, in the redesigned M sedan due in early 2010, making about 340–350 hp. The complex direct-injection technology, in which fuel is injected directly into the cylinder rather than in the intake ports as is more common, most likely will also make its way into the G37 coupe and sedan as mid-cycle upgrades before the cars are completely redesigned in about three years. Besides making more power, gasoline direct-injection technology is also needed to meet tightening emissions and fuel-economy regulations around the world.