This is much more interesting than that. It's a gasoline engine (fuel injected at intake and spark to ignite) that can operate in compression ignition in some o

This is much more interesting than that. It's a gasoline engine (fuel injected at intake and spark to ignite) that can operate in compression ignition in some of its range and thus get better mileage[1]. It should get efficiencies much similar to diesel but me much cleaner (less NOx). [1] https://en.wikipedia.org/wiki/Homogeneous_charge_compression_ignition https://en.wikipedia.org/wiki/Homogeneous_charge_compression...