Explainer: Tesla's self-driving ambitions get a reboot

Tesla IncChief Executive Elon Musk on Tuesday evening tweeted that the electric car maker will be rolling out a new version of its Full Self Driving software, the latest attempt by the California-based company to tout autonomous driving.Tesla's "Full Self Driving" software would be an important source of revenue, once it is fully deployed.Tesla owners have paid $8,000 up front in hopes of eventually receiving the upgrade.