10 years ago, the concept of self-driving cars seemed the stuff of science-fiction. Today, self-driving cars are not an uncommon sight in some cities and the U.K. government has just approved their trial operation between London and Oxford in a bid to bring the technology more rapidly to market.

A driver for the Uber Technologies Inc. ride-hailing service uses the company’s app on a smartphone in an arranged photograph in Singapore, on Monday, Oct. 31, 2016. Uber is riding a Southeast Asian ride-hailing arena with some 620 million people, forecast to grow more than five times to $13 billion by 2025. Photographer: Ore Huiying/Bloomberg via Getty Images

Companies like Google, Uber, Apple and a host of mainstream automotive giants are all investing hundreds of millions of dollars to bring the technology to reality. Over a few brief years, we have begun to accept the statistics that self-driving cars are dramatically safer than those is piloted by human beings.

As a result, acceptance by both the public and the insurance industry is now almost a given for the probable implementation by the end of this decade. But what of flying cars? A concept equally the stuff of science fiction for 70 years or more that now thanks to the dreams and deep pockets of Silicon Valley entrepreneurs may be becoming a reality sooner than we think.