The picture of the car up next to my signal strength, and globe is? Its a small silver car which seems to have appeared overnight....coincidentally my little girl had it this morning, but I have no idea what it means or how it got there.

Edit - its ok, I found the answer now - its on car profile - doh.

sounds like someone has gone into your profile and clicked the car profile as apposed to normal profile (there is office profile there too).