general problems of the 2009 Hyundai Sonata

Drivers sun visor hangs down, will not stay up.

I purchased a 2009 Sonata for my wife's safety, driving the roads of texas to and from work. I notified Hyundai about a serious and dangerous instrument panel control design flaw. . The Sonata manual is self-explanatory starting at page 1-101 - addressing known and frequent fogging all windows issues. Briefly, it is unconscionable to ask the driver, while driving, take one hand off the wheel, look down, find, read and manually reset multiple exact positions in temperature, a/c and fan speeds to defog all windows. At 70 miles, or any mph--this is a disaster waiting to happen. Sonata Hyundai windows fog quickly, completely and frequently blinding the driver necessitating distracting changes to be made to balance multiple changes in outside to inside temps along roads. Defogging is achieved--only-- with outside air intake vents open. Life threatening maneuvers to drive safely are distractions designed into the Hyundai instrument control system. In all my years I have not found such an incompetent, unsafe, unreasonable and life threatening design in any automobile, or over the road rig I owned. If hyunda's answer is they cannot fix or reprogram the system, I am selling the car as quickly as they say no. This design is a death trap, unsafe to drive, and a threat to others on the road as well.