Rex ,, yes she can ,, and the process is quite simple.
No Carnet needed.
Many do in fact tour Korea on their way to Dong Hae to catch the ferry,, we have one of the best mountain,, rolling hills and curvy roads than any where ,, yes Seoul is madness but you must see it,, like I said whenever, I am in Korea ,, I would be more than happy to provide any assistance,,,also have many members through out the country if you need emergency assistance,,,
If you look at the map of Korea and look for route 7, 77 or 777,, which goes around the edge of the coast , 2250KM ,, I did it in 3nights and 4 days with 3 other friends,, on Harley Davidsons.. East coast has many wonderful mountain roads as well as 500KM of coast line via old route 7 ,,, middle of the country has many old temples ,,famous mountains,, ancient buildings ,,
West coast ,, flat ,, heavy traffic ,,polluted,, I am not impressed with it..
Your average speed will be around 60KM through towns,, also on foreign license,, cops are very lenient ,, they will just waive you off in case you violate traffic laws,,or even if you use car only roads. Express ways are no no ,,, but some local highways are much more faster and can cruise at 120 - 160KM and cops will never ask for bakshishi.
If you have more specific questions about Korea ,, just post here.
Cheers.