Shares of Tesla rose as much as 3.8% in after-hours trading Wednesday following the electric car maker's second-quarter earnings report that showed a greater loss than what Wall Street had expected, on better-than-anticipated revenues. Here are the key numbers: Earnings: -$3.06 per share (-$2.90 expected) Revenue: $4.0 billion ($3.97 expected) Cash burn — a key metric for Tesla as it seeks to become profitable this year — was $739.5 million, down slightly from $745.3 million last quarter.