AP
FILE - In this Oct. 13, 2018, file photo, a sign marks the entrance to the Tesla Gigafactory in Sparks, Nev. Terms of any potential state tax breaks Tesla might get as part of a newly announced $3.6 billion expansion of its northern Nevada factory will remain secret until late February under a non-disclosure agreement state officials signed with the electric car-maker.(AP Photo/John Locher, File)