So, as already mentioned, Ricardo Vega is majority owner of Lamborghini Austin (confirmed here, fourth paragraph). Tried to dig into him through the usual avenues, dude is a fucking GHOST. Only thing I think I've pinned is that his name might actually be Ricardo Antonio Vega Serrador. He doesn't show up in public records, no real estate owned is his name, no social media presence I can find beyond LinkedIn, etc. The house mentioned in the article linked above, and his Lambo and Ferrari dealerships, are all owned by different entities -- none of which he has any public association with. Though based on the associations that can be dug up (registered agents, officers, affiliated entities, etc.), there is a strong link to San Antonio.
Then there is Bruce Knox, the co-owner and managing partner of Lamborghini Austin (link here) and former Executive Vice President of Circuit of the Americas (link). Knox was "installed into the [COTA] project by minor investor Red McCombs" (link) as President and CEO of Formula United States starting in 2011. At that time, he was also CEO of McCombs Partners (link). He got his foot in the door with McCombs Partners when back in 2005 when it acquired a company that Knox was CEO and co-founder of (Interactive Remarketing).
Someone upthread mentioned Red might be throwing money around with one foot in the grave, this seems like a connection that could be done through.