I've never seen a taxi in south Florida with child seats either. A limo company would probably provide one but not the typical street cab. And as Penny notes, it is about a 60 mile drive. When we flew with our son in his younger days, we always got a seat for him and took his car seat to use aboard the airplane. This is much safer for the child and also much more comfortable for the parents. Just make sure your car seat is FAA approved and bring it along.