Authorities say the rockslide happened above SR-14 between mile post 8 and 9 in Iron County.
The boulder reportedly came from the south side of the road, causing severe damage to an eastbound Tacoma.
Miraculously, police say no one was injured in the incident.
A westbound Fusion was also impacted, however there were reportedly no injuries to the occupants of that vehicle either.
No further information is currently available.