TomTom has introduced a car kit for the iPhone. Compatible with the iPhone 3G and 3GS (running OS 3.0 or later), it features a secure mount to dock the iPhone to the desired position on the car windshield or dashboard. An adjustable mount securely rotates iPhone to either portrait or landscape mode for optimal positioning and widescreen route display. Voice instructions are provided through the built-in speaker and the integrated microphone and speaker also allow hands-free calling while driving. TomTom claims that the built-in GPS receiver reduces the chance of signal drop out in areas where GPS reception is limited like cities with tall buildings or forested areas. Additional features include an iPhone charging facility and a facility to play music via the audio output (providing your car stereo has an audio input of course).