There's nothing new about injecting nitrous oxide into a combustion engine to increase its output. Sure, the technology has been refined over the years, but the concept has been viable for more than ...
Like many wonderful and useful scientific things, nitrous oxide was discovered by accident in 18th-century England, and much later (during the '30s and '40s) it was used by dentists as an anesthetic.
Remember the days when nitrous oxide used to (unfairly, in my opinion) get a bad rap as being the almighty destructor of 5.0-liter Mustang engines? Thankfully, things are a lot different (and better) ...