Not so much a "$1M payment" as the appearance of a future payment in exchange for installing malware:

>that could allow the hackers to occupy the Tesla information security team. ... extract corporate and network data, which would be held ransom.... For his participation in the ploy, the Gigafactory Nevada employee would receive $500,000, later raised to $1 million, to be paid in cash or bitcoin.

...

>The hacker agreed to pay an advance of $11,000 to the Giga Nevada worker. Two days later, on August 21, the Tesla employee was contacted by the hacker once more, who stated that the project was being “delayed” and all payments relating to the plan would not be transferred until a later date.