It sounds like an ok idea but as some people have said, the cost of doing this would be enormous and the UK doesn't really have the hugest amount of money in the world. But also think about all the delays in peoples days if they are traveling down the motorway, only recently the Highway's Agency has started work on a motorway near to where I live and are working to turn it into a 'Smart Motorway' which is to make travel times reduced and less congestion on motorways, now whilst they are doing this work which is reported to take at least 2 years to complete, people who are traveling on the motorway are experiencing delays and there is more congestion on the motorways. So if they did add this project onto the 'Smart Motorway' then it would cause more problems because the public do not like the delays and sometimes the wireless electric charging might not be what most people need because there is more petrol car's still on the roads than there are electric or hybrid cars.