What does the sentence “But were Oedipa some single melted crystal of urban horse” mean?
Here is the full quote:
What the road really was, she fancied, was this hypodermic needle, inserted somewhere ahead into the vein of a freeway, a vein nourishing the mainliner L.A., keeping it happy, coherent, protected from pain, or whatever passes, with a city, for pain. But were Oedipa some single melted crystal of urban horse, L.A., really, would be no less turned on for her absence.
I tried really hard to parse the sentence, and I googled it, but I can’t glean the slightest meaning from it.