Maybe add tracking to something like this?
Youtube from CES
Makers of the glasses in video

In my town we have sms-parking. We send an sms with the parkingzone and platenumber of the car. The default is is 1 hour parking/sms. When there is 10 minutes remaining of your parking time there is an sms sent you asking if you'd like to stay longer. The city is divided into zones depending on how much they want people to circulate, i.e. it's cheaper in less visited areas. No walking, no panicking about getting back to the meter before it runs out. It takes about 2 seconds per car for the parking attendants to check if you have paid or not via their own mobile systems.

I get so freakishly angry when I read these articles. What/why makes people so intent of killing other human beings? I know it goes on, yes. but I can't for the life of me understand why? Please cannot someone instead invent the unlimited energy machine just to make this shit go away. "Wow I just invented a faster way of killing people, remotely!!" FU! I say, you should be ashamed of yourself. Invent something useful instead. Many of us are still in the animal stage and have to maintain the integrity of our territory. Wake the fuck up! It isn't about your land or your views of god or whatever. There are atleast 6 billion! people on this earth that do not share your entire life vision. Learn to coexist. Protection is one thing of course, but when you see you are winning by 6000 points in some game, can't you have the dignity to at least give the opposing team some pointers(money, whatever, instead of a war budget huge as Mount Everest) in how to play the game? "They"(oooooh) aren't always out to kill you, "they" want a decent life and(often) some improvement for their offspring, that's all. Of course there are some charismatic numbnuts trying to influence people to do stupid things, this is where information comes in(IT). Give them information, give them means to communicate. But FFS, stop bombing the shit out of everyone, it isn't useful,successful nor human.

Another form I discovered "by accident" is when I changed the exhaust on my bike and removed the dbkiller at the same time. The thing is so loud it would wake up the dead when I use the throttle creatively and the good thing about it was that it even woke up the asshat "I own the road while talking in my cell"-SUV drivers. I guess the sound of hellfire and brimstone coming raining down on their "precious" is enough(sometimes).