The $1 billion investment from a PIF affiliate into Lucid Group is a significant financial endorsement that can provide the necessary capital for Lucid to expand its operations, invest in new technologies, and potentially increase its market share in the electric vehicle industry. This investment is likely to be viewed positively by investors, as it not only strengthens Lucid's balance sheet but also signals confidence in its business model and growth prospects, potentially leading to a short-term increase in its stock price.