Buick 1994 Roadmaster Owner's Manual page 180

cloth to your vehicle to alert police that you've been
stopped by the snow. Put on extra clothing or wrap a
blanket around you. If you have no blankets or extra
clothing, make body insulators from newspapers, burlap
bags, rags, floor mats
--
anything you can wrap around
yourself or tuck under your clothing to keep warm.
You can
run
the engine to keep warm, but be careful.