Volvo Cars will merge its engine development and manufacturing assets with those of parent Geely, creating a division to supply in-house brands Lotus, LEVC, Lynk and Proton, and also potential rivals with next-generation combustion and hybrid engines. It marks the latest example of consolidation in the engine manufacturing sector as tighter emissions rules hike development costs at a time when the expansion of electric cars calls into question the long-term demand for ga