Extra frame behind the seat loads your weight on the front tire. May also be more stable than a regular frame with fast steering. YRMV . Main risk to Tern, 20" wheels fall further into potholes than 26" wheels.I am leaning towards the Tern Short Haul b/c its an actual COMPACT cargo bike- it looks like there is more than 6" of frame behind the seat before the rear wheel of the Short Haul too. Does that make it more stable- no pitching?