I fail to understand

Whenever I walk home from the gym, I go past a funeral home. Today however, I noticed that there was a black SUV-like vehicle parked outside and on it was painted "Funeral home ambulance". Yup, a funeral home ambulance, complete with rooftop sirens and all. I fail to understand... why on earth would a funeral home require an ambulance... I mean... surely it'd be too late by then...