Various Chrysler models have had auto locking at a preset speed for years. My 03 Dodge van and my wife's 03 PT Cruiser both had it and we were delighted with this feature. Always worked and not intrusive. Go to coastaletech.com and look at their stuff. They have an autolocker kit for $65 that will activate the built-in Toyota feature, a mod to make the front power socket hot at all times for $10 and a number of lock-pic products if you have the nav feature in your car. I called a local Toyota dealer today about setting the auto lock and the service person didn't know what I was talking about.