Though Code 130R and Tru 140S sound a bit like the scientific names given to distant planets, Chevrolet used the Detroit Auto Show to unveil this pair of eco-friendly, youth-oriented concepts that the company says it designed with input from the under-30 crowd. The Code 130R, seen here with GM executive Ed Welburn, is a rear-wheel drive, four-seat coupe. Chevrolet says the 130R is powered by 1.4-liter, turbocharged four-cylinder engine. It also uses GM's eAssist system (seen in production models such as Buick's LaCrosse and the 2013 Chevrolet Malibu), which features engine shutoff at stoplights and regenerative braking for greater efficiency.