Are there streets where cars can drive in the Ork/Seattle Underground?

I’m working on writing a Shadowrun (sr5) mission that partly takes place in the Ork/Seattle Underground, and something I’ve been wondering is if there are any streets down there. My current understanding is that it mostly consists of narrow tunnels, but meanwhile I’ve not been able to find any source stating that there aren’t any streets there. This thus leads me to wonder, are there — canonically — any streets where cars would fit (and realistically be able for someone to drive on) in the Ork/Seattle Underground in Seattle in Shadowrun sr5?