Uber and Lyft Being Blamed for Traffic Congestion

According to one study, several major cities in the United States have seen the number of cars per household increase, with 20% of households in some cities having two or more vehicles (a higher figure than ten years ago). Why would that be so, if more and more options become available to commuters, via public transit, ride-hailing (i.e., Uber or Lyft), scooters, etc.? More details at StreetBlogsUSA.