Wow, didn´t do this exact route but I did do the Bicester to Thame A road, no others vehicles, lovely road condition, rural flat views with some great bends and the sun was out, highly recommended.
Nice scenery and villages along the route. Better suited to a bit of a day out relaxing ride with your partner rather than a mad solo blast as there are not many long sections without hitting some traffic or 30 mph zones and some quite poor road surfaces in some areas. I didn´t see many bikers on the route considering it was high season so they´re obviously not incredibly impressed either.
very nice route, high speed areas with good mix of tight and fast flowing bends
Best on an early weekend/bank holiday morning as has a tendency to get ´Sunday´ drivers holding you up