These here are official trademark designs of an unnamed Chevrolet compact minivan with very a Volt-like front- and rear-end styling cues - notice the shape of the headlamps and tail lamps.
As noted by our friends over at GM Inside News, the compact people carrier depicted in the drawings appears to be the same vehicle seen standing alongside the forthcoming Chevrolet Orlando MPV in a leaked video last year (see photo on the right).
It's been rumored that GM is planning to introduce a compact crossover prototype equipped with the Volt's extended range electric / gasoline powerplant at this month's Beijing Auto Show.