On the way to driverless road-train: Digital technologies in modeling of movement, calculation and design of a road-train with hybrid propulsion unitRoman Dobretsov, Matvey Gubachev, Ivan Naletov and Alexey VasilievSHS Web of Conf., 44 (2018) 00030DOI: https://doi.org/10.1051/shsconf/20184400030