Interstate Trucking Data

There is a market for crop data.  Done by fly-overs.
There is a market for electricity data.  Done by monitors on land near huge power lines.
Railroad industry publishes data.
Is there a market for truck data?  If so, set up cameras to read truck name + plates + truck ID + weight reading at interstate point of entry scales.  Could possibly do the same at turnpike scales.
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Ceridian-UCLA Pulse of Commerce Index

By tracking the volume and location of diesel fuel being purchased, the index closely monitors the over the road movement of produce, raw materials, goods-in-process and finished goods to U.S. factories, retailers and consumers.

ATA Truck Tonnage Index