Microsoft and Ford are set to announce a partnership to expand wireless connectivity in Ford's lineup of cars, according to a report in the Wall Street Journal.

Called Sync, the Wi-Fi connectivity will give Ford vehicles owners the possibility to make free mobile phone calls using VoIP, and download information to mobiles and laptops.

According to the report, Sync will make its debut this week at the Detroit auto show and at CES in Las Vegas. It will be an option on Focus and Five Hundred sedans, and be available across Ford's range of trucks and cars starting with 2008 models, which are available in the autumn of 2007.

Ford is trying to boost its image and popularity by offering entertainment options like MP3 player ports on in-car stereos, and fitting DVD players and TV screens for backseat viewing.

As we will have a reporter on the ground at CES, we will be sure to bring you an update on this story.