John, it MUST be the Thacker Pass DFS... Must be... what else could it be since the Cauchari-Olaroz situation was put back a few months due to temporary shut down of construction in Argentina?

See the insert below from a LAC PR dated 25 Septebmer 2019:

"Feasibility Study 

Building on the results of the  2018 PFS, Lithium Americas expects to  release
an NI 43-101  compliant definitive feasibility  study by mid-2020, which  will
incorporate detail on the  status of the permitting  process, outcomes of  the
2018 exploration program, results generated  by the process testing  facility,
updated project design, costs and  economic results"

Drawing your attention to the phrase: "definitive feasibility  study by mid-2020"

I could be wrong, but what else happening now would increase the volume to over a million shares? Finding gold at C-O? Maybe, maybe it is "white gold". JMO Cheers, Bill