They claim their target market is Asia, focusing on scooters and the highly=competitive 3-wheel utility vehicles market in India. Their concept seems interesting, and maybe it could succeed, but it's been under development since 2007 and, after some delays, a production version of the 110cc scooter engine seems likely to start in November 2017 in India. Larger-displacement versions with more cylinders are under development too, intended to the automobile market, even though their horizontal layout keep their applicability quite limited to longitudinal-engined vehicles. But anyway, even though American automakers are not so receptive to technologies developed by third parties, it's likely to be one of the ways to meet more stringent EPA/CAFE requirements.
http://www.pinnacle-engines.com/