When you get your registration document, before you file for the CARB decals, make sure that the field labelled 'MP' (stands for motive power) is 'E' for electric and not another code like 'G' for gas. If it is not E, you will need to have the dealer fix it before your application will be approved.
After waiting almost a month for the DMV to look at my application for the decals, I got sent a letter saying the car was incorrectly registered as a gas car and I had to get the dealer to fill in a document to correct the motive power from G to E. Then the application had to be sent back to the DMV where they will probably take another month to process. So here it is 2 months from bringing the Spark home and I'm still waiting for those decals
The dealer also mis-registered the car with OnStar as a Silverado truck. I'm thinking shopping on a Sunday when their back office is not around is going to lead to these kinds of mistakes.