I wish I knew if he was driving a silver car at the time. On Halloween night, the police came to my door at 1:30 in the morning to ask if I knew the man sitting in front of my house (in a silver car)!! Scared me half to death and I never heard another word about it! Was he planning to rob us? Was he watching because one of the "regular" vehicles in our driveway was not there that night? Too many what-ifs for me!
Guess that alarm-system update was the right thing to do!