► Kia GT4 Stinger concept

Beneath the low wedge of the GT4 Stinger’s hood resides a tuned version of Kia’s proven turbocharged gasoline direct injected (T-GDI) four-cylinder engine putting out an impressive 315 horsepower. “Our Optima racecars use the same engine and can produce more than 400 horsepower,“ said Kearns. “So why not infuse our concept with the kind of power that will make people take notice?“ That power is put to the ground via a close-ratio six-speed manual transmission driving the rear wheels, which ar