Growers run their own vehicles for good reasons. Plants on trolleys don't survive a general parcel network. Garden centres want stock at a particular gate on a particular morning. A driver who knows the customer will phone ahead, swap a damaged tray and bring the empties back — and that is worth more than any tracking page.
The trouble is that the van is the least-measured asset in the business. Everything else has a number against it. A crop has a cost, a bench has a yield, a pot has a price. The van has a fuel card and a vague sense that "it pays for itself."
Often it does. But it pays for itself on the days it goes out properly loaded, and it quietly loses money on the days it doesn't, and most nurseries could not tell you the ratio. The answer is to treat the run as a unit of production with a capacity, a cost and a plan, exactly like a propagation batch.