Although I don't own it, I recall Bagginsbill saying the studio light models included in the Dreamland Car Patio are actually functional as lights, at least with IDL enabled...

http://www.renderosity.com/mod/bcs/?ViewProduct=93079

EDITED because It overwrote the message when I pasted in the link; I had to recompose the message in a text editor and paste it in.  Stoopid Forum!!! >:(

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The Wisdom of bagginsbill:

"Oh - the manual says that? I have never read the manual - this must be why."
“I could buy better software, but then I'd have to be an artist and what's the point of that?"
"The [R'osity Forum Search] 'Default' label should actually say 'Don't Find What I'm Looking For'".
bagginsbill's Free Stuff... https://web.archive.org/web/20201010171535/https://sites.google.com/site/bagginsbill/Home