In the nearly three weeks since Donald Trump was sworn in as president, Elon Musk and a small cohort of young loyalists have torn through the D.C. bureaucracy blindly and possibly illegally, blocking federal spending and pushing out anyone who stands in their way.  Thomas Shedd, a former Tesla engineer who was recently made director of Technology Transformation Services at the General Services Administration, told staffers that he wants to transform the agency into the image of a Silicon Valley