http://www.physorg.com/news3667.html

My wife and I recently purchased a new Chrysler Town and Country minivan.

One of the goodies is a tire pressure (TP) monitor for which an new icon is visible when the motor is started.

When I take it in for routine scheduled service, I plan to ask if anyone at the dealer has seen or seen a report of the TP monitor actually reporting low pressure. That is, if I haven"t seen such a message in the meantime.

I admit that automatic tire inflation that someone longed for would be neater, but it would have certainly jacked up the price of our minivan appreciably to have that (not that it"s available).

The us military has a system that both monitors and inflates or deflates the vehicles tires if needed. They have had it for some time. Pretty cool I must say, you push a button stating what you are about to do and the tire is in/deflated acordingly.

If I recall it is on the vehicle that replaced the 2 1/2 or known as the, "Duce in a half". I am sorry I don't remember the name.

To check.
Get a pump handy and let some air out of one of the tires (or tyre, if you are English).

The old Hummers had this feature, just one of the perks of driving a 100k 5mpg vehicle, personally I ride a bike and it is the SUV of bikes only getting 38 mpg.