What does the expression “write from the wheel” mean?

"From the wheel" meant selling or snapping up items immediately after delivery, bypassing a warehouse or other delays and preparation: "Fresh fish was sold straight from the wheel – no sooner had the trucks pulled up than a line had already formed."

Followed by a figurative meaning: doing something immediately, without delay. By the mid-20th century, this meaning was already appropriated by creative fields requiring speed and agility: current affairs literature and especially "field" journalism. The expression "from the wheel" has become a professional marker for reporters. It means creating material directly during or immediately after an event, without returning to the office, often in the car on the way from the scene: "The correspondent wrote the material from the wheel on the way to the editorial office."

Even in the IT and management world, one can hear the expression "making decisions from the wheel" today – that is, acting promptly, without lengthy approvals.

An English equivalent would be: “Do something on the fly.”