One answer is to not have pedestrians. As the suburbs do.
Not everybody wants to live in a city or can live in a city.
> I knew a family growing up that had six kids, so 8 person household, they had a minivan (Toyota Tarago).
Unlike pickup trucks, SUVs are fantastic for hauling both children and assorted cargo. Unlike minivans, they're great at handling a variety of driving conditions: gravel, dirt, ice/snow, inclines. They're also fun to drive and don't make it feel like the next sixteen years of your family's life is just dedicated to the brood.