Threatening Existing Economy Models
Some economic experts fear that the mass production of electric vehicles and focus on this kind of technology will destroy the current economic model. That, in turn, will affect global politics and all the worldwide monetary systems as well. If the oil companies lose their monopoly on energy and the oil-rich nations lose their authority on the global political scene, the world could be heading toward another crisis (via Guardian).
Also, think about the enormous car industry with all the companies that make fuel-related products, such as engine parts, fuel injection systems, transmissions, and drivetrain components. All those companies and millions of people will be out of a job, which would put further strain on the economy and global standards.