1.Electric drive system:E hoʻohana ʻia nā kaʻa kolepa ʻo Kina e nā pā a holo ʻia e nā kaʻa uila.ʻO nā mea maikaʻi o nā kaʻa kolepa cengo ʻo ia ka pale ʻana i ke kaiapuni, haʻahaʻa haʻahaʻa, haʻahaʻa nā kumukūʻai mālama a me ka ʻike hoʻokele maʻalahi, no laila ʻoi aku ka maikaʻi o ka hoʻololi ʻana i ka holo mālie o nā wahi pōkole ma nā papa kolepa a i ʻole nā ​​​​wahi like ʻole.

2.Fuel hoʻokele nenoaiu: Gasoline a diesel like me ka wahie no ka wahie kolepa kaa.ʻO kēia mau ʻano wahie i hoʻolako pinepine ʻia me nā ʻenekini hoʻopau i loko, i hoʻoikaika ʻia e nā ʻano puhi wahie kuʻuna.He mea maʻamau kēia ʻano kaʻa kolepa ma kekahi mau papa kolepa.I kēia mau lā, me ka nui o ka pollution a me ka walaʻau, ʻoi aku ka kiʻekiʻe o ka ʻae ʻana i nā kaʻa kolepa uila 4 noho ma mua o nā kaʻa hoʻokele kinoea.