Whaaaaat? Think of the workers needed to construct the mag lev trackways. The work would be done by local generals and sub-contractors getting the work as it proceded across each State. That could be written into the Authorization. It should be no different than I-83 was with Pres. Ike.
If you’re just looking at the construction jobs, then who even needs a maglev train? You could get the same economic benefit by excavating landfills and building pyramids out of the materials.