Its a good sytem pelarmis. There is a small set up off portugal that has run for a year or two - one is going in off shetland next year.
Its a good wave energy generator and has some good advantages. Its highly modular if some highly stresssed components so should be cheap and easy to build and maintain in large quantities and so far seems reliable. It looks very hopeful but its still early days - I want to see it survive a couple of winters off Scotland yet.
Long way from powering cars with it tho