Ended up driving it in to the Kia dealer. (Too much controversy over who might pay the ^$100 tow...KOA RSA said their system showed this dealer was a non-covered destination???). What a ride! about 12 miles on 55-65mph highway and a ½ mile or so from the highway to the garage...did surge at steady 65 bouncing about once per second between 2000-25 rpm. Near exit in heavier traffic it got stuck in something resembling high gear and would not downshift until it slowed to 45 then jumped into something like 2nd gear and stayed stuck there at ^4000rpm at 55. Stopped for a red light on the exit, trans disengaged, no forward motion at first while engine revved then it did catch and was able to get the rest of the way to the garage. More to follow.