[ RadSafe ] Hot particles on automobile air filters

[Brennan, Mike (DOH)]

I have received several calls and emails from people in Washington who
are alarmed about "hot particles" being found on automobile air filters.
The only source I found for this is a vague statement from Arnold
Gundersen in an article he gave to Aljazeera.  I admit that I do not
give to this source the same credence I would give to an article in a
peer reviewed journal.  

Has anyone seen anything else about this?