As motorways become more and more clogged up with traffic, a new generation of flying cars will be needed to ferry people along skyways.

That is the verdict of engineers from the US space agency and aeronautical firms, who envision future commuters travelling by “skycar”.

These could look much like the concept skycar shown in the picture, designed by Boeing research and development.

However, such vehicles could be some 25 years from appearing on the market.

Efforts to build flying vehicles in the past have not been very successful.

Such vehicles would not only be expensive and require the skills of a trained pilot to fly, but there are significant engineering challenges involved in developing them.

More here.