TY CONF TI SYNERGY OF POWER UNITS AND LIGHTWEIGHT MATERIALS AS A NEW FRONTIER OF ENERGY EFFICIENCY OF A MOTOR VEHICLE KW energy efficiency KW powertrain KW lightweight materials KW synergy KW weight reduction KW electric vehicle KW hybrid car KW carbon fiber (CFRP) KW regenerative braking KW downsizing JO MODERN SYSTEMS AND TECHNOLOGIES IN TRANSPORT: PROBLEMS AND PROSPECTS - 2025 AU Terekhina, I.V. AU Shakina, F.A. AU Shvyrev, S.A. AU Volkov, V.S. AU Zhaivoronok, D.A. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov