Chinese state-backed companies are making heavy investments in U.S. hyperloop startups Arrivo and Hyperloop Transportation Technologies, lining up $1 billion and $300 million in credit respectively. Both companies are planning something big, although their approaches differ in some key ways. Transport company Arrivo is focusing on relieving highway traffic by creating a separate track that allows cars to zip along at 200 miles per hour (320 km/h) on magnetically levitated sleds inside vacuum-sealed tubes (it’s not yet clear if this will be above ground or underground). Arrivo’s exact plans to build a Chinese hyperloop system have not yet been announced, but co-founder Andrew Liu told Bloomberg that $1 billion in funding could be enough to build “as many as three legs of a commercial, citywide hyperloop system of 6 miles to 9 miles [9.5 to 14.4 km] per section.” The company hasn’t yet announced in which city it’ll be built. Meanwhile, Hyperloop Transportation Technologies has already made up its mind as to where it will plop down its first Chinese loop. It’s the old familiar maglev train design inside a vacuum tube, but instead it’s passengers, not their cars, that will ride along at speeds of up to 750 mph (1200 km/h). Most of the $300 million will go towards building a 6.2 mile (10 km) test track in Guizhou province.