1. Tesla figured out that attracting young talent to the SF Bay area has become very difficult. "You will have to have a 1-2 commute, each way, and will probably never be able to own a home anywhere near where you work," is not a compelling recruiting message.
2. "PPS: Let's not forget the fact that your chances of getting an educated workforce are a LOT less. Do you think you will get tech workers in a place where "JEEEZUZZZ" is more imporatant than Math?" In real life, Dell Computers and one of the HP companies is headquartered in the Austin area. Also, the largest US semiconductor company, Texas Instruments (TI), is based in the Houston area. Finding techno-talent in Texas will not be a problem for Tesla.
Further, TI is one of THE leaders in power management microcontrollers. Whether directly or indirectly, a power management dependent company like Tesla will benefit from the availability in Texas of people with power management expertise.