As Tesla chases an elusive prize – government approval of its "Full Self-Driving" technology across Europe – the US automaker is waging a pressure campaign casting safety regulators as feckless bureaucrats blocking its life-saving technology.Elon Musk's company has pushed regulators directly to reduce the rigor of safety reviews, submitted its own research making bold crash-reduction claims, and used social media to mobilize Tesla enthusiasts to demand speedy approvals.The strategy has worked so far, winning a critical first approval in the Netherlands that cleared the way for a Europe-wide vote expected soon by regulators from 27 European Union countries. Seven other…