That Page must have been really expensive. Fully responsive, seemingly tested on iPad and iPhone back when mobile browser penetration was much lower compared to now. Incredible loading times, maybe they used a lot of asset preprocessing/compressing to make the page load that fast.
One thing that bothers me is that there is no Google Analytics. Without good tracking they might not be able to optimise conversion rates of the landing page in the long run.
Its not a single page application though. That really hurts usability. As a user I want to load the entire web application up front, then deal with JavaScript loading nonsense constantly.
Why should big powerful servers do the work when I have my battery constrained smartphone/laptop to do the heavy lifting?
People forget that web pages require maintenance. This is a great example of the benefits that come from keeping plenty of spare HTML on hand. Though I hate think about the cost of to taxpayers of a <p> in 1997...and the </p> tags? Well that's just plain over engineering. Oh wait, it's Nasa.
One thing that bothers me is that there is no Google Analytics. Without good tracking they might not be able to optimise conversion rates of the landing page in the long run.