I wrote a plugin and a bunch of other small scripts over time that could handle it. If you’re hiding the scrollbar, this will make a similar fullscreen animation like on that site:
$(window).impulse({
range: function() {return $(window).height()},
delay: true
});
http://codepen.io/Shikkediel/pen/GJRbOV
It becomes a bit more complicated when the scrollbar is showing, but still feasible. In fact, tesla.com doesn’t really work correct either when you use the scrollbar.
This demo has a part that keeps track of the sections:
codepen.io/jRMmbe
I could filter it out and apply it to a demo of yours in case of further response.
