I had no idea this was peak flower blooming week(s), but now that I see your pictures I think that was just what I saw last weekend. But, I saw it from Santiago peak/middle divide road. Of course I didn't see the flowers close up, but looking out over the entire mountain range, where there must have been hundreds of acres of these flowers covering the hillsides, it was an amazing sight from that perspective. And I think we passed fewer than 10 cars total.