The processes that creates gneiss can recreate normal granite if carried on long enough, and gneiss can also form from gabbro or shale. Schist and quartzite may be formed alongside gneiss, along with other types of metamorphic rock formed from igneous rocks. Gneiss is very common and actually forms the majority of the Earth's lower crust, so any deep tunneling encounters gneiss.
Inventoried roadless area. Inventoried Roadless Areas are a group of United States Forest Service lands that have been identified by government reviews as lands without existing roads that could be suitable for roadless area conservation as wilderness or other non-standard protections.
Navlab 5 (closest vehicle), finished in 1995, was the first car to drive coast-to-coast (USA) autonomously . An autonomous car (also known as a driverless car, auto, self-driving car, robotic car) is a vehicle that is capable of sensing its environment and navigating without human input. Many such vehicles are being developed, but as of February 2017 automated cars permitted on public roads are not yet fully autonomous.