Tell Toyota, that yes, you want to plug in your car!
Here's what I did. I went to the blue right-hand column, where it says email Toyota. Then I went to topic: vehicle, and sub-topic: hybrid technology.
Then I entered the following comment in the box:
I recently read in the NY Times that you have announced plans to offer a plug-in hybrid by 2010. I just wanted to let you, Toyota, know, that yes, I do want to plug in my car! I am excited to hear that you'll be making this technology available soon, and I look forward to driving a plug-in hybrid as my next car.
If anyone finds a better contact for Toyota, put it in the comments!