Agreed.  Even with all of those safeguards and precautions, the sheer volume of traffic from Lake Hood and Spenard Lake, and the airstrip out there happens with amazingly trouble-free results. Thanks to good training and certification, scrupulous maintenance and repair, and responsible operating procedures on the part of our local private pilots, we have little to be concerned about.  If the vehicles and drivers you see around town were typical of what you find with aviation I would be afraid...very afraid.