Interesting, is there a formal process for becoming qualified to build cars or is just up to the whim of the MTA? I feel like having more competition for bids would lower the cost.
Any reason why the rolling stock for the NTTs seem to always be manufactured by Bombardier/Alstom or Kawasaki? Why doesn't the MTA ever go with other manufacturers like CAF, Siemens, Stadler, etc?