I've seen it on rare occasions. If the ground gets saturated like it often does in VA because of the clay, then the air temp drops suddenly (& drastically), the moisture in the ground hits the cold air & makes real purdy ice crystals all over the grass. Kinda makes the top layer of soil look like a frozen tar pit as well.
BTW - NOT the best conditions for 4wheeling. That's how you end up frame deep in muck (voice of experience).