Thats like saying water isn’t useful because it can’t pick up a hammer.
The bond market provides the liquidity to allow companies to take on debt in order to fund their operations, matching it to buyers willing to lend out the money. It is the thing that enables companies to produce anything to begin with. And It is not only vital to the private sector, but is the primary method for how the us government funds its budget.
SpaceX wouldn’t exist without the bond market, because the entire company is built on government handouts (designed to outsource everything to private companies for the benefit of the wealthy capital owning class) which were funded through government issued bonds that raised the capital to give to spacex for contracts.
Hydrogen would be a much better form of power for long haul, at least for ships and diesel trains and trucks. By weight it is more energy dense than gasoline but volume is the problem, however for a big ship or a train it makes perfect sense. Point to point intermodal logistics hubs with hydrogen production at either end produced entirely by excess renewable during the day.
Set up one facility in LA and one in Shanghai for ships transiting between them and that could cut thousands of vehicles worth of emissions for every ship. Expand that out to train terminals, truck stops, and certain airports for the right flights - they’re all generally located in the same area anyways.
The problem is the cost of production, but the solution is having so much excess solar generation throughout the day that the cost to produce becomes competitive. Battery tech can always improve, but hydrogen tech is here right now and available today, and only really requires the right incentive structure. Just building out solar panels to lower electricity prices low enough could do that.