TomTom's well-publicised TomTom car kit for iPhone is now on sale and can be bought from the TomTom web store and Apple online store from now.

As many of you will know, the kit comprises of a secure mount that docks iPhone into position on the car windscreen or dashboard, using a twist-and-lock motion, for widescreen or landscape display.

As well as docking the iPhone, the kit also incorporates a built-in GPS receiver that claims to boost reception and improve positioning accuracy.

There's also a built-in loud speaker and microphone that allows for hands-free calling while driving and can play iPhone music through the AUX OUT port on a car stereo.

Also offering the ability to charge the iPhone when docked, the car kit has a retail price of £99.99 in the UK and will be available in the US via TomTom and Apple "in the near future".

The TomTom app is sold separately via the App Store for £60. The app will soon see an update bringing Advanced Lane Guidance and an updated safety camera database as well as compatibility with 2G iPhones - until then, this kit is only good for 3G and 3GS models.