we launched the beta version of DriveAssist ( http://bit.ly/DriveAssist ). You can test the app by using the g+ community in order to get exclusive access.
Here's the g+ community: http://bit.ly/1nEZt0V
This is the first app to warn you about pedestrians, bicyclists, and other on-road obstacles! Here's a comparison video with iOnRoad, drivea and DriveAssist: http://bit.ly/DriveAssistComp