I just signed up with my 2005, so that should put it over the top, right?

The email I got back included this statement:

"The 2005 Xterra is not yet included in the Car Reliability Survey. If you know others with this car, please encourage them to join. When it is included you'll automatically start receiving emails with links to the survey."

Maybe it wont be included until after some months of data are collected after hitting the target? I didn't spend much time reading the fine print etc...