Honda is developing new four-cylinder gas engines running on the Atkinson cycle.The engines, with 1.5 and 2.0 displacements, are touted as being 'all-new' and will focus on hybrid applications.Improvements over current hybrid powertrains will enable the engines to deliver the highest combustion efficiency.Honda aims to sell 1.3 million hybrids annually by the end of the decade and transition to battery and fuel cell EVs by 2040.