Banyan is a catch-all phrase for several different species of figs (Ficus sp.) that share the trait of producing what are known as prop roots from their trunks and branches. Emerging like threads from the tree's bark, these roots are pulled downwards by gravity until they come in contact with the ground.

It must have looked suspicious. Picture a rest stop off an Interstate, a van parked by itself a little removed from any other vehicles. Two men stand outside the van, waiting expectantly, looking down the road and one of them now and then checks his watch. Finally a second van pulls up, right alongside the first.