My mom just purchased a new Chevy Malibu 2010, Doing my regular going over everything new I discovered It has no spare tire. They now put in a air pump/ fix a flat sort of device. I asked the Salesman (who was new) and seemed surprised no spare in trunk. Had to go ask about it.
Called parts dept at the dealer and they guy in parts had no idea they did not come with a spare. A spare from a 2009 model is $249 If I had ordered the car to be built, could have got one for $100
Called a large junk yard (very reputable ) and that guy had no idea no spare was offered. Sure enough his inventory showed nothing available.
Did a search on the Net and looks like Ford also does not put one in some models.
Did you buy a new car in the last year or two? Are you sure you have a spare?