<Li> The color LCD screens on some automotive navigation systems can also be used to display television broadcasts or DVD movies . </Li> <Li> A few systems integrate (or communicate) with mobile phones for hands - free talking and SMS messaging (i.e., using Bluetooth or Wi - Fi). </Li> <Li> Automotive navigation systems can include personal information management for meetings, which can be combined with a traffic and public transport information system . </Li> <P> Many vehicle manufacturers offer a GPS navigation device as an option in their vehicles . Customers whose vehicles did not ship with GPS can therefore purchase and retrofit the original factory - supplied GPS unit . In some cases this can be a straightforward "plug - and - play" installation if the required wiring harness is already present in the vehicle . However, with some manufacturers, new wiring is required, making the installation more complex . </P>

When did they start putting touch screens in cars