Don't have much details as to which car these engines are being planned out for,but here is the engine explained
The engine is two-cylindered but don't be disappointed read on,
Total vehicle and weight is cut but using a new two-cylinder turbocharged engine that follows the current trend toward smaller displacement boosted engines and is twenty percent lighter and takes up twenty-five percent less space than a similarly powerful four cylinder. The 900cc SGE twin puts out 105 hp in turbo form using gasoline and Fiat's new Multiair electronic valve control system. A 65hp normally aspirated version is also being developed.
The Multiair system has no throttle which is always an efficiency drain in engines, but instead uses an electro-hydraulic system to actuate the valves. The system can provide full control over valve lift and timing. The SGE two cylinder also has a special crankshaft balancing system to ensure smooth running and is expected to go into production later in the decade. The version shown in the concept is equipped with a dual-fuel system that can operate on gasoline or a 70/30 methane-hydrogen mix.
Source:
Autoblog
In layman term this should be a very powerful engine but at the same time very very fuel efficient.
