Yeah, everybody's definition of DD is different dependent on their situation.

My DD definition is freeway capable and being able to handle big city traffic: engine power/acceleration, stability, braking power.
My daily commute is around 60 miles, which consists of 50 miles of rural/urban interstate with 10 miles of large city, off-highway traffic. I can drive my SPOA, 32", locked and geared rig on my commute, but it is not very desirable. Especially the stop and go traffic 0-50-0 cycle and panic stops on the interstate. Not fun.
If I lived back in my hometown where the speed limit is 45 and no freeways around, I could drive it everyday without any complaints. In fact, I've comment on how many extremely lifted rigs you see in my hometown that you do not see around Tulsa. They could never negotiate the traffic.