I happened to notice this morning some stretch type of limos at an agency in Santiago. I suppose they are for sale, but not sure. Even if they are, they may be willing to rent them out for something like a wedding, maybe worth the call if this is what you need. Anyway, the name was Prestige Auto (I am sure the "Prestige" part is correct, but not positive about the "Auto" word, I was driving and just caught it out of the corner of my eye). They are located on Avenida Gregorio Luperon, just south of the intersection of Avenida Estrella Sadhala, on the east side of the road. I did not get the phone number but if you are interested, post back on this thread and I will try to drive by again or maybe someone else can assist. Good luck and congratulations on your nuptials.