Okay: a little insight:
Last summer I worked at the former Vulcan cement works and quary on the Pala Reservation. It's right on Hwy 76. Currently, the site is finalizing a groundwater issue between Pala and Vulcan, and settlement is imanent.
I met the race-facility developer (one of them anyway) one day on site who showed me the construction plans of the upcoming facility. Currently there are no "immediate" plans for a road course. They are going to focus on BMX, Motocross racing (hoping to get a National racing sponsorship to replace the old Carlsbad Raceway Motocross races), atv, and mtn.bike/single-track recreation area. Also in the plans: camping and hiking.
When I mentioned my interest in P-car racing and my afilliation with PCA he said the original plans were to build a road-course. Unfortunately, shallow groundwater and extensive grading to "smooth out" the rather dramatic elevational changes would require fairly expensive topographic changes. Additionally, the site sits on shallow "overburden" atop very hard granitic bedrock that would have to be removed (can you say blasting?) in order to achieve a raceway configuration with any speed potential. This, according to the developer. My two months out there lends me to the opinion that, based on his original plans, he's right. The site is in a basin that runs up into the mtns. just west of Palomar, and it's pretty tough country. Bedrock is shallow, and even "daylights" in several areas on site. Tough to smooth out.
However, if the more southerly portions of the facility were re-configured, there might be some potential for a road-course. Good luck on that, though. The "environmentally sensitive" areas are part of the environmental impact-swap the faciltiy is required to maintain. Remember, the SLR river is right there, on the other side of the hwy., so watershed impacts will be closely monitored.
It would be great to have a road course that close to home, and I'd be right there in a heart-beat to drive it. But based on my work up there, it'd be a tough, slow, quick elevation-change course ... kinda like the track above Streets of Willow.
