Wow, the new Mac Pro page, one of the worst examples of modern web design. That... and all the bootstrap websites. HA HA. Maybe I'm old school. When I see "Parallax" I think of the cool video games from the 90's.
But since you're showing examples, here's one of my favorites...
...it's not exactly parallax scrolling like old video games, but so cute. Could that be made in Hype today? Well, layers can be moved at different speeds. The trick would be controlling the animation to the position of the scroll bar. That seems like something that could be done with JavaScript, but would probably take some effort...
I'm not sure, but maybe this will help... GitHub - Prinzhorn/skrollr: Stand-alone parallax scrolling library for mobile (Android + iOS) and desktop. No jQuery. Just plain JavaScript (and some love).
...but why do it?! Scrolling sites are this generation's Furby... Furby - Wikipedia