Once the chips arrive, there will be a wave of new cars on the market. Some are already sold (and the customer waits for their completion), but some will have to sell. In such conditions, prices will have to drop at least temporarily.
Considering that new (and used) cars prices went up a lot in the last year, this will be a welcome change, especially for EVs.
Link: https://www.infineon.com/cms/en/about-infineon/press/press-r...
Same with Intel's new Arizona plant which began construction recently, it is not a reaction due to the current shortage, but to improve USA's domestic access to high-end modern semiconductor tech and due to Intel's shifted business plans to provide fab services for others.
So, while there will be semiconductor plants opening, they won't cause a bull-whip-effect. The need is more permanent for those fabs, and they're planned since years.
[0] https://www.pcmag.com/news/intel-scraps-plans-to-open-cuttin...