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Refreshed Kia Optima Hybrid continues to blend good looks and efficiency

With all the excitement at the Kia stand surrounding the new Soul EV, it's easy to forget that there were other cars on display at the Korean marque's Chicago Auto Show display. The Niro Concept from the Frankfurt Motor Show made an appearance, but the other production model on display was the refreshed Optima Hybrid (which was tucked away in a corner).
Like the standard Optima, which was refreshed at the 2013 New York Auto Show last year, the hybridized sedan gets a slightly restyled face and rear end. As we told you in our official post on the car yesterday, the gas-electric powertrain of the 2014 Optima Hybrid still deploys 199 total system horsepower and 235 pound-feet of torque. Buyers of the base LX car will net 36 miles per gallon in the city and 40 on the highway, while the upmarket EX loses a mile per gallon in both environments.
Have a look at our live gallery of the new Optima Hybrid, from the floor of the Chicago Auto Show.

Kia U.K. builds a 420-horsepower Stinger GT track car

The Kia Stinger GT is an admirable sports sedan, er, hatchback, with 365 horsepower. But Kia's U.K. branch wanted more, leading to the 420-horsepower Singer GT420 you see here. As Kia explains, the car used to create this one-off track car is actually the first Stinger GT pre-production test car in the U.K. It was used for final testing, photography, and was even featured on Top Gear and The Grand Tour. Once its testing and publicity duties were over, though, it was slated to be crushed. But some delaying and the idea of building a track car saved it. To get it to its final output ratings of 420 horsepower and 413 pound-feet of torque, Kia (with help from Hyundai Motor Group's technical team in Germany) added a high-flow air filter, aftermarket exhaust without catalytic converters, an upgraded transmission cooler, and an engine tune. The car also benefits from weight reduction: The whole car was gutted, taking out everything unnecessary for speed such as the sound system, rear seats, carpeting, bumper supports and more. Even with the addition of a roll cage and extra chassis braces, the car is just over 330 pounds lighter than stock. Handling and stopping capabilities were also enhanced with stiffer springs and thicker anti-roll bars, along with six-piston brake calipers and brake cooling ducts up front. The car also gets visual changes in the form of a front splitter and rear spoiler and diffuser, plus the bold vinyl wrap. Naturally, this isn't a production car, especially with the gutted interior and emissions non-compliant exhaust. But looking at the list of modifications, it wouldn't be hard to replicate the Stinger GT420 on your own. In fact, someone could probably exceed the car's performance, since there are some areas ripe for upgrading Kia skipped over, such as upgrading the turbochargers. Your move, tuners.

Kia Trail'ster Concept brings traction for the Soul in Chicago

Kia teased its hybrid all-wheel drive Trail'ster concept prior to the 2015 Chicago Auto Show debut, but the company kept some of this off-road Soul's biggest features a secret. Designed both to go off the beaten path and drive efficiently in the city, the company's designers in California added 2.5-inches of extra ground clearance and aluminum skid plates to give the hatchback a more rugged appearance. Drivers can also let the weather into the cabin thanks to a retractable canvas roof. However, the Trail'ster's most intriguing feature is its drivetrain. With a platform still based on the production Soul, up front there's a 1.6-liter turbocharged four-cylinder with stop/start churning out 185 horsepower and 185 pound-feet of torque through a six-speed automatic gearbox. The gas engine exclusively runs the front axle; at the rear there's an electric motor with 35 hp and 100 lb-ft with a 1.2-kWh lithium-ion polymer battery under the cargo floor providing assistance. The whole system produces a total output of 220 hp and 285 lb-ft of twist, and the Kia claims, the concept could even run two or three miles purely on electric power. There's no physical connection between the internal combustion engine at the front and electric in the rear. Under low-throttle situations, the electric motor runs exclusively, but under most driving conditions, the all-wheel drive system provides extra traction and a bit more acceleration. Kia claims that if it put this layout into production it would offer 25-30 percent better city fuel economy and a 5-10 percent improvement on the highway compared to the current 2.0-liter powertrain in the Soul. That works about to about 30 miles per gallon city and 34 mpg highway, based on the maximum figures. The automaker isn't saying anything official yet, but it's at least hinting that a system like this could end up in the Soul one day. "The Trail'ster concept is a near-future look at how the production Kia Soul would logically evolve into an AWD-capable version that's built to escape the city streets and roam into the mountain wilderness," Tom Kearns, chief designer at the Kia Design Center of America, said in the model's announcement.