What a great thread! Now I have to look up a whole new load of Novelty artists.I bought two portable speakers (non powered) from Radio Shack and plug them into my portable CD Player, and use the cigarette lighter for power. It works great, and I haven't had any problems with theft. 'Course half the time I leave the whole car unlocked hoping someone will steal it. It's a 91 Toyota Camry that's pretty beat up.
If you go back a few years there is also:
Cliff Edwards
George Formby
Frank Crumit
Benny Bell
Phill Harris
Helen Kane
The list keeps on going....