Car alarm tied into a home alarm

[Chris <chriswheeldon@xxxxxxxxx>]

Just a random thought, but is there an ideal way to have a wireless sensor =
in a car that's connected to a home alarm system for when it's parked in th=
e driveway at night.  Something that would be armed in stay mode only (disa=
rmed in away mode) and unsupervised so that it can be left in the car?  I s=
uppose it could be on a separate partition from the rest of the house, but =
that's a bit of a pain to remember to arm and disarm.

A motion would be good except for the temperature range (-40 in the winter =
up to however ridiculously hot it gets in a sealed car on a summer afternoo=
n).  A door contact would rely on someone opening a specific door to break =
in, which is useless for a smash and grab through the window and expensive/=
time consuming to have a contact on every door.  A glassbreak would be usel=
ess against jimmying the door lock.

Any custom solutions that could be applied to any or at least most systems?

- Chris