I hate to be that go-green hippie of the day, but if you have to drive, why not do it efficiently? Having good tire pressure boosts gas efficiency, but getting out and manually checking your tires is just a pain in the ass. This wireless kit from Suzhou State Auto Electronics has four valve caps that wirelessly transmit tire-pressure information to a display you can mount on your dash. It also alerts you if a tire rapidly deflates, so you know right away if you have a flat.

Each valve includes a security cap (which you will inevitably lose) to keep those hoodlums from making off with your high-tech wireless transmitters for crack-smoking purposes. The entire shebang runs for $150, which may be pricey, but it's the lazy man's way to monitor tire pressure and should prevent any flat-tire-in-the-ghetto incidents. Being lazy is so damn easy nowadays. Obesity, what?
— Travis Hudson

Suzhou State Auto Electronics, via Oh Gizmo!