The issue then becomes this:
&quot;uberFAMILY provides one forward-facing car seat for a child who is at least (a) 12 months old AND (b) 22 lbs. AND (c) 31 inches. A child is too big at 48 lbs. or 52 inches.&quot;<p>What if you need two car seats, or if your kid is outside those parameters?  You still need a seat.  Likewise, adding these options can add significant delay to your getting a car.  Most people are used to transportation being <i>reliable</i>.  When you step out of your home or office, your car is <i>there</i>, ready to go.  Having to wait an extra 15 minutes for the car to show up is not what most people want to do.<p>I think car-sharing services will change things, quite a lot, but I don&#x27;t think it will eliminate private car ownership.  Most families will own one &quot;family car&quot; for road trips, etc, etc.