the proposed vehicle circulation routes appear at odds with the renders. having a road running immediately around the outside of the building will certainly ruin the "embedded in nature" aesthetic they've got going on there.
A road? Were you looking at the floor plan for one of the underground parking levels?
first diagram in the link is traffic flow. there's a blue circle going all the way around the building. appleinsider has kindly cropped out any sort of legend, i suppose it could be underground though.
Ahh, you're right. I took a look at the PDFs and the blue circle indicates emergency access routes.