Those rumors of GM developing its own affordable electric car? Yep, they're true. Chevrolet has unveiled the Bolt EV concept, its vision of a vehicle that can deliver 200 miles of all-electric driving for about $30,000 after tax credits. It's not as slick as a Tesla Model S, but it promises an airy, spacious design (check out that full-length glass roof) with some technological smarts. It touts multiple driving modes that adjust the steering, acceleration and suspension, and the interior's center stack is dominated by a 10-inch capacitive touchscreen. Also, you wouldn't have to spring for a BMW or Tesla to get a vehicle that can park itself -- the Bolt's smartphone app would automatically fetch and drop off the car when you're in a hurry.