can night vision be added later on? because...

[marcx5]

night vision won't be available initially, but will be probably available in the next year or so for the x5. do you think it can be added on afterwards?

for example, does anyone know if you can add it onto a 7 series now... since it's already available on that car???

seems like it should be possible, as it's just a camera that integrates with the nav screen.... but who knows if they will sell it to you or make it work.

any thoughts?