Hi,

> A good car alarm should have its own reserve source of power, as many
> crooks will cut a battery cable to disable the alarm before tampering
> with the car.  This doesn't address the major limitation of car alarms:
> nobody cares (other than the car's owner) when the alarm goes off.
>
I'm going to put one or two piezzo sound bombs inside my car.  If no one
on the outside minds an alarm then maybe the thief would mind the 100db+
of high pitched, skull cracking audio energy in a confined space ;-)

Niki