It's mentioned towards the bottom of the page which has Table 4 in it. To say light accelerates contravenes one of the cornerstones of Relativity theory, that is the whole point of it = light travels at the same, constant speed in all frames of reference.
I haven't read that book or the seen the math but if any of that math is derived from that presumption, then it is going to be wrong wrong.
However, I wouldn't like to put myself up against Nikolai Tesla
Back to the trains idea - I think it is great. It does seem a bit Heath Robinson in design (or Rube -Goldberg if you are American) but it uses simple, reliable and well understood technology, (therefore should be cheap) is environmenally friendly and readily scalable.
It does help if you have a lot of desert land avaialable...