A few weeks ago, I finally tried Tesla Motors' "autopilot" feature. A Tesla rep and I tooled around Houston's I-45 in a Model X crossover SUV for 15 minutes, just long enough to test the vehicle's adaptive cruise/automatic lane-keeping wizardry. Once I toggled on the autopilot, the rep relaxed by checking e-mail on her phone. This sent a clear message: keep an eye on the dumb journalist when he's driving the $140,000 SUV, but once the machine takes over, everything’s fine.
