The issue then becomes this: "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

The issue then becomes this: "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." 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 reliable. When you step out of your home or office, your car is there, ready to go. Having to wait an extra 15 minutes for the car to show up is not what most people want to do. I think car-sharing services will change things, quite a lot, but I don't think it will eliminate private car ownership. Most families will own one "family car" for road trips, etc, etc.