DETROIT — Ford Motor Co. will soon offer wireless mobile offices in its F-series pickups, an option aimed at building contractors and others who do business on the road, according to NBC 4 TV. Pricing isn’t finalized, but it would cost around $3,000 for a wireless-equipped computer, printer, and global positioning system. Add-ons including a digital camera and credit card scanner also would be available. Ford expects to offer the mobile office as a dealer-installed accessory in 2006, according to the news report. The system uses a flat Stargate Mobile computer, powered by the truck’s battery and mounted on a stand between the driver’s seat and passenger seat. The computer has a touch-screen option — eliminating the need for a keyboard or mouse — and is designed to be removed from the stand and taken to a work site. It stays connected to the Internet via a broadband wireless cellular card. The computer will be equipped with office software, including Excel spreadsheets and PowerPoint, and also can play music or be used for navigation.