I'll never forget it - went for a weekend trip with a buddy of mine, we're getting off the plane walking down the gate corridor, and I'm punching buttons on my cell phone like crazy. He asks me "What the HELL are you doing?" I said "You'll see."
We get to the car, it's running, warmed up (like 30 degrees that night) and ready to go.
The point is to describe my all time favorite alarm - Clifford Avantguard III with PageMate. PageMate is basically a pager receiver you call the number and enter codes that correspond to certain commands, like "start" or "unlock". I wish they still made that, but I guess everyone's going OnStar style now.