Me, DH, & our three kids have driven twice to Disney from NYC.
The first time we drove to Savannah GA, stayed overnight & then drove the rest the next day.
The second time we were so excited to get down to WDW that we drove straight thru..left at 1a.m. (but my kids woke up & stayed up! ugh). The did have there t.v. in the car to keep them busy. We got to WDW at 6p.m. the next day. It took 17 hours...
Both trips coming home were a nightmare..we were so tired from Disney that we were falling asleep & it just seemed longer coming home...also the traffic once you hit Wachington is always brutal & so is the traffic coming back into NY.
I like to drive because we bring water, juices boxes, detergent, double stroller etc. I would not take all that on a plane. It is nice not to have the depend on the buses at WDW.
This year we are flying because that trip back it just too much all in one shot. If you have 2 days to drive then it can be a good thing.