My 2010 Santa Fe has let me down 7 times now!! 2 of these times I was drving on a highway and the other times it just wouldnt start in the morning.

My Santa Fe has stranded me twice while driving on a highway at high speeds.  I can
only describe it as is it has been possessed?  The radio starts acting up.  All lights on
dash flask erratically, I loose power steering and eventually the whole car shuts down.  
Thank God, I was able to pull off the road.  This all happens within a few minutes.  All
power is gone and I can't get the car into park.  Each time I have been far from home
and had to have it towed.  By the time the dealership looks at the car, it starts fine for
them and no codes show up to indicate any problems.  This is the first time I have
ever owned a new car and I am very disapointed in all the work, time and money I have
put into resolving this problem without any help from Hyundai!