Advanced technology -compared to human technology in existence at the time -not only the working/construction of the wheels, but their being controlled by the spirit of the living creatures -is specified. I mean futuristic inasmuch as those sorts of things are often thought of as futuristic -could not be accomplished by men then -but possibly in the future, etc.
Futuristic -"having or involving very modern technology or design" -could certainly describe Ezekiel's wheels from his perspective.
15Now as I looked at the living creatures, I saw a wheel on the earth beside the living creatures, one for each of the four of them.d 16As for the appearance of the wheels and their construction: their appearance was like the gleaming of beryl. And the four had the same likeness, their appearance and construction being as it were a wheel within a wheel. 17When they went, they went in any of their four directionsewithout turning as they went. 18And their rims were tall and awesome, and the rims of all four were full of eyes all around. 19And when the living creatures went, the wheels went beside them; and when the living creatures rose from the earth, the wheels rose.20Wherever the spirit wanted to go, they went, and the wheels rose along with them, for the spirit of the living creaturesf was in the wheels. 21When those went, these went; and when those stood, these stood; and when those rose from the earth, the wheels rose along with them, for the spirit of the living creatures was in the wheels.
Sounds like a plot for 1950s scifi.