Joby Aviation, on the other hand, is still going strong with significant investment from companies like Toyota, Intel and JetBlue. Total funding for the company sitting at nearly a billion dollars.

Its focus on autonomous flying vehicles specifically puts it in a unique bracket of having the time to think and invest rather than needing to pool resources to other areas of its business. The company has said it plans to get its taxis in the air by 2030.

Picture: Uber