Not while driving.
Weed yes, PCP not.

Mostly.

One time we got caught in an ice
storm, coming home, just before dawn.

PCPed out of our mind.

There were multiple days worth of accumulated
packed ice on the road (suburban development).

The heater was broken, we tried to use a little
propane heater but it didn't really work, was too
cold.

The van windshied was FILTHY.

And the sun rose, hit the filthy windshield,
and turned it opaque.

That was a close call, since I think we drove
for another 20 seconds before we realized we
were blind.