ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,161, issued on March 18, was assigned to ZELEROS GLOBAL S.L. (Valencia, Spain).

"Combined-propulsion system and method for high-speed land vehicles, in a forced vacuum" was invented by Federico Lluesma Rodriguez (Valencia, Spain), Daniel Orient Martin (Valencia, Spain), David Pistoni Perez (Valencia, Spain), Alberto Sanchez Jimenez (Valencia, Spain) and Juan Vicen Balaguer (Valencia, Spain).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a method and a combined-propulsion system for high-speed vehicles, which includes a closed tubular guiding structure and a vehicle designed to move through the inside of the tubular ...