This is why Toyota is selling exactly on car with no options except three colors and floor mats.

Read this tutorial:

http://www.arb.ca.gov/msprog/zevprog/factsheets/zev_tutorial.pdf

It will answer lots of questions. In a nutshell, if Toyota makes 0.79% of it production with ZEV's, that is one part of the overall compliance with CARB rules.

330,000 cars multiplied by 0.79% equals 2607 cars.

The reason that they are hard to find for the average consumer is not every dealer has them. Here in San Diego, only three dealers have them for an area with 3.5 million people.