Because the unit runs on Bluetooth, it doesn't require any installation or wiring.
"Today's drivers demand convenience and connectivity without missing what's important to them - their calls and their music," said Motorola Australia Companion Products business manager, John Demezieres.
"We're excited to introduce a portable, music-optimized ROKR to the car to enhance the mobile experience while consumers are on the road."
The T505 also features StationFinder - a Motorola-owned technology that announces where the best FM connection can be found on the user's car radio.
When calls come in, the T505 automatically mutes the music and audibly announces the Caller-ID, so drivers can keep their eyes on the road.
Echo and noise reduction technology and a built-in microphone and 2-watt speaker also ensure that drivers have outstanding sound throughout their ride, says Motorola.