gMapsSpeed (beta)

Get speedometer and speed limit alerts for Google Maps Navigation!

Trial features:

- Display overlay with speed information on your screen

- Display last two digits of your speed in notification area

- Choose between km/h and mph

- Starts automatically when connected to car dock

Pro features:

- Speeding alerts (using threshold system, automatic system is planned)

- Smart alert volume adjusting to background noise

- Configurable speed overlay behaviour (hide, show only if Navigator is running)

- Trial notice removal

- And you will support independent developer and encourage me to add new awesome features!

This is a beta version supported via xda-developers forums, but e-mail communication is also available, especially for Pro users customer support.