Welcome back to TechCrunch Mobility, your hub for all things “future of transportation.” To get this in your inbox, sign up here for free — just click TechCrunch Mobility ! Elon Musk has never had the best relationship with regulators, often bumping up against or outright sidestepping local and state laws where his numerous companies operate.  This week has been particularly active on the regulatory front.  Musk’s tunneling and infrastructure firm The Boring Company is accused of nearly 800