We Nob Hill folks seem to be in the midst of a rash of auto thefts and break-ins.   Sorry to read of all the instances.  Wondering about police recommended preventative measures.  Of course, no unattended vehicle warmups, generally lock your vehicle and leave nothing of value in the vehicle are obvious.  What other recommendations?  I own an old Miata rag top and the wisdom is to leave nothing in the car and leave it unlocked.  If a crook wants in he/she will slice the top if locked.  That results in a cost of about $800 to replace the top.  Are there any police recommendations in this area?