Samsung Galaxy S IV will let you scroll websites with your eyes

This article talks about the hardware required.  My guess is that the front camera will be up to the task, with some clever software.  Size of the image of the eye won't be a problem, because, although the front camera is only 2 megapixels, when the screen is being read, it's always within arms length. 

http://www.dvice.com/2013-3-4/samsung-galaxy-s-iv-will-let-you-scroll-websites-your-eyes / New York City smartphone specifications features employee eye tracking software source track  user’s eyes user scroll anonymity not authorized speak news media read articles reach bottom of the page software automatically scroll down reveal next paragraphs text company possible supplier Tobii smartphones 4.99-inch display 1920x 1080 resolution eight-core Samsung-built Exynos processor 2GB RAM 13-megapixel camera LED flash 1080p HD video recording two-megapixel front camera Android 4.2 Jelly Bean /

Belt Buckle Wallet

Credit: Belt Buckle Wallet/ The Gadgeteer

A wallet in your back pocket can be uncomfortable, even painful when sitting on it for hours as when driving.  Can even cause back problems.  And it can be an invitation to pickpockets as well.

So you put it in a front pocket where it can be almost as uncomfortable, & competes for space with your phone.

Or, use your belt buckle as your wallet:

http://the-gadgeteer.com/2013/03/07/smart-belt-buckle-belt-buckle-wallet/     / credit card cash receipt skinnier the better carry a thick stack of credit cards cash back pocket uncomfortable sit on can even cause back problems money clips carry just the essentials less pocket bulk sport sports Smart Belt Buckle pockets empty wallet around your waist stainless steel Smart Belt Bucklefits most men’s belts slot secure securely hold several credit cards ID folded cash /

3D-printed Urbee 2 hybrid car is light, strong, & nearing production (video)

Credit: Jim Kor/ Urbee Project/ Inhabitat

The, "diesel engine that can potentially be run on ethanol", is a bit of a puzzle.  Ethanol has a very high octane rating.  Diesel fuel has a very low octane rating, so that it can be ignited without the need for a spark, by compression alone.  Perhaps the idea is a buyer option of either an ethanol or diesel engine.

http://inhabitat.com/the-urbee-2-a-3d-printed-hybrid-car-that-is-light-strong-and-nearing-production/     / Hybrid electric motor EV electric vehicle battery LiIon lithium ion range diesel ethanol alcohol fuel charge recharge urban transportation mobility runabout /