Obstacles from interstellar matters and distortion in warp drive superluminal travel scenario Siyu Bian, Yi Wang, Zun Wang and Mian Zhu Eur. Phys. J. C, 82 10 (2022) 861 Published online: 02 October 2022 DOI: 10.1140/epjc/s10052-022-10840-w