Heads-up displays keep your eyes on the windshield, which is a lot safer than constantly glancing down to check your speed or your phone. They're also expensive. But inventor Ivan Kablukov made the clever observation that everything required to power a heads-up display exists in the modern-day smartphones many of us already have, meaning it could be quite simple—and cheap—for all smartphone owners to install heads-up technology in their cars.
Assuming it works as advertised, the ridiculously inexpensive $49 device would serve as a great example of using simple design to neatly solve a problem using what's already available to the end user. I also like that the set-up requires you to keep your phone on the dashboard, eliminating the urge to glance down and check it.
The HUDWAY Glass is up on Kickstarter, but this one doesn't need your help; at press time it was at $482,421 on a $100,000 goal. If you want one, you'd better hurry—there's only four days left to pledge.