It's fairly typical within the industry to go to the same two destinations every single day. For example, you go from a potato chip manufacturing plant to a distribution center x number of times every single day. You can contract with either a freight forwarder who will handle booking different operators to actually move the goods or you can deal with a trucking company directly. If you find the right company and the economics make sense, I'm sure you could get a deal done. I would say most drivers would even prefer the same route since you can plan your life better. That being said, it depends on how long the "long haul" is as it will be harder to find someone willing to travel across the entire USA for an extended period of time.
we have excess local diesel, which we are willing to sell at a 20% discount, but only if there is enough traffic
Off-topic:
Do you think trucking operators can be incentivized to saturate certain routes/corridor?
e.g. To justify infra-structure, I want an operator to do at least 10 trucks/day through a given corridor, and can offer some savings/rebates. Lets say months-long commitments and mostly long haul.
Is this doable or completely unrealistic?
Edit: to be clear, I am not the customer, the operator to find enough customers to fill the route.