Peter Cziborra/Reuters One New York college student was ready to spend the summer in Palo Alto with Tesla’s engineering HR team. Another from Michigan spent thousands on housing for an internship in Austin, Texas, to work with the electric automaker’s firmware recruiting group. A third in North Carolina was elated to join Tesla’s Buffalo, New York, hub as a visual design intern.But all their internship offers were suddenly yanked this week.“After a single phone call of less than two minutes,” on