Didn't get enough screen time IMO. Those are some bad-ass routers and they pretty much still run most of the internet backbone to this day.
Those line cards actually support 100G too, and based on the optics, I think that's what they're operating at, plus I think I saw some QSFP48s in the DWDM gear, which makes sense, 4 cables per card, 2 cards per router, 2 routers, makes 1600Gbps. Unfortunately, I have a feeling their upstream capacity is the bottleneck here since I don't know of any ISP that sells over 100G. Still boggles the mind; I've only ever seen 100G on backbones or VERY big tech company uplinks. Also, they skipped slot 0 which hurts my soul.