Good Gear Guide
In Pictures: 21 awesome GPS and location-aware app...
Using your cellphone while driving is a serious safety no-no, but adding Ulysse Speedometer can make you a safer driver. (As long as you don't operate the app while you're behind the wheel, of course!)
This app calculates your vehicle's speed, altitude and direction, and lets you set warnings to indicate when you're driving too fast. You also can track your car's speed and performance over time.
In Pictures: 21 awesome GPS and location-aware apps for Android