You didn't think Tesla's Semi truck would go without a Ludicrous-like software setting just because it's meant for work, did you? Sure enough, it exists. Elon Musk has revealed that the prototype electric cargo hauler has a Mad Max mode. No, this won't give the Semi a battering ram or a flame-spewing guitar -- rather, it influences Autopilot's blind spot threshold. Musk didn't elaborate on what that meant, but his photo of the settings page suggests the semi-autonomous driving feature will make lane changes with even more gusto than the "aggressive" option.