Making a car difficult to steal

After reading thru this thread, I learned a lot of good ideas, but the best idea that works for me is this: [ame="http://www.amazon.com/dp/B008FLOWAU/ref=asc_df_B008FLOWAU3088243?smid=A1AX3OB6FJWQVB&tag=pgmp-397-100-20&linkCode=df0&creative=395109&creativeASIN=B008FLOWAU"]Amazon.com : Sourcingbay Tracking Drive Vehicle Car Tracker Gps/gsm/gprs System : GPS & Navigation[/ame] thanks to whoever posted this.

Check out the reviews, they work like they're supposed to, and they are very inexpensive. (It's a tracker, let's you see via google maps exactly where your car is, but is not an anti theft device. You still need to do your best in that area, whatever works for you.)