After years of hype, Tesla's (TSLA -0.67%) robotaxis are finally here.Though you might call it a soft opening, the electric vehicle (EV) maker's much-vaunted autonomous vehicle (AV) network began taking paying rides on Sunday in Austin, Texas. The company is using just a handful of vehicles to provide rides right now -- just 10 to 20 of its Model Y vehicles rather than the two-person Cybercab that it introduced at an event in October.The robotaxis are operating in a geofenced area with both safety operators ...