There is a bill before congress right now which could have serious implications for all of us who ever sell or publicly display our photographs. It is HR683, the Trademark Dilution Revision Act.
If enacted as law, this would seriously restrict our right to photograph anything bearing a registered trademark, or anything that is itself a trademark. An example below is Volkswagen's stated intention to sue an artist who made a whimsical drawing of a Volkswagen beetle made up of bugs. Using cars, motorcycles, kitchen appliances, you name it, as props in our photos could put us at risk of ruinous lawsuits.
The details have been published and are on the web at the following URL's: