Where in the world is Carmen San Ysidro

Damn, I'm hilarious. I have to be patient with my brain, it will work when and only when it wants to. I never played the game Carmen Sandiego, wasn't even sure exactly what it was about, but as soon as I'm in San Diego (or the southerly suburb of San Ysidro) my brain comes up with a reference to an 80's computer game.
The Mexican border has been a psychological blockade for several months and now, I am 1 mile away from it. The emails from Eddy about drug wars, worried parents and girlfriend, and of course several people's looks along the way after hearing I'm going through Mexico. It's a surprisingly chilly night; I'm back into the tent tonight for one last night before the behemoth is vanquished tomorrow. Me and the Mexican border. Somewhere between 0800 and 0900 hours. Must continue to put out positive vibes, especially in the face of fear and doubt.
Many religious references in San Diego, with a trailer sporting big, bold lettering "JESUS CHRIST IS THE LORD. IT IS NOT A SWEAR WORD." A bone-china white church with two parapets jutted out of the side of the 405 highway heading south. Oh yes, there are Christian extremists too, we only hear about them when they're burning the Qur-an in Florida.