Haven't seen it listen much but it is probably one of the top contenders. There is a reason Toyota, along with many others, moved their (U.S.) headquarters here.
North Dallas is getting crazy crowded, though. Enough that housing supply for their potential workers really should be a concern for any additional company looking to relocate there.
That said, engineer availability should be fairly good when compared to most places outside of more traditional tech hubs (the area is served by TCU/SMU/UTD directly, UT/Texas A&M/additional Texas schools indirectly, is already near EDS and Perot Systems/whatever those two call themselves these days) and the local authorities have shown both a desire and ability to attract major company retractions. You would have to think the North Dallas area is on the shortlist.
While North Dallas is exploding (huge growth in population for the past decade, maybe the most in the country?), it is far from being overpopulated. There is absolutely no shortage of land/property.
That said, engineer availability should be fairly good when compared to most places outside of more traditional tech hubs (the area is served by TCU/SMU/UTD directly, UT/Texas A&M/additional Texas schools indirectly, is already near EDS and Perot Systems/whatever those two call themselves these days) and the local authorities have shown both a desire and ability to attract major company retractions. You would have to think the North Dallas area is on the shortlist.