" Green Valley Raceway was a motorsports race track located in Smithfield, Texas, "- found it Ken H - and should have read your notes.
Never been to Texas - Closest I got was Colorado [North of Tx ] and Mexico - but in the West - Baja Peninsula.
Didn't realise how big Dallas - Fort Worth is these days -just Googled it.

Cheers
Roger.

PS that XKSS - looks mean, but in these days what a thing to do to such a rare car.
Don't mention what we did in NZ to Ferrari, Maserati, Alfa Romeo, Tojiero Jaguars et al ..