I know the Corrie residents are well used to murders, fires, kidnappings, tram crashes, etc. happening on their doorstep all the time but David and Kylie's completely non-plussed reaction to someone spread out in the middle of the street didn't ring true.
You'd be at least somewhat curious and not dismiss it completely like it was a dead rat or something.
In fact, everyone's reaction to Carla was a bit off. Anna, Phelan and Kevin took forever to go over to her and then Kate and Aidan were just basically shrugging their shoulders like it was a mild inconvenice. Surely most people on seeing someone related to them in such a condition would act a little hysterical at first!?