Our driver, Kei, is very nice.  His service is superb!  He gave us lot of tips on how to make the best out of the Busan pass.  He made a lot of good recommendations like the local seafood market, ocean view cafe, etc.  All of food was sooo delicious.  He helped us taking great pictures (which is outside of his responsibilities as well).  Also, he was our translator as he brought us to a lot of local place and tried hard to fight for the best deal for us.  We were like 15 min overtime but he said it was fine as long as we had fun.  Highly recommend Kei!