here is the whole law
http://www.leg.state.fl.us/Statutes...ng=&URL=0300-0399/0316/Sections/0316.613.html
here is the pertinent portions
316.613 Child restraint requirements.
(1)(a) Every operator of a motor vehicle as defined in this section, while transporting a child in a motor vehicle operated on the roadways, streets, or highways of this state, shall, if the child is 5 years of age or younger, provide for protection of the child by properly using a crash-tested, federally approved child restraint device. For children aged through 3 years, such restraint device must be a separate carrier or a vehicle manufacturers integrated child seat. For children aged 4 through 5 years, a separate carrier, an integrated child seat, or a seat belt may be used.
(6) The child restraint requirements imposed by this section do not apply to a chauffeur-driven taxi, limousine, sedan, van, bus, motor coach, or other passenger vehicle if the operator and the motor vehicle are hired and used for the transportation of persons for compensation.
It is the obligation and responsibility of the parent, guardian, or other person responsible for a childs welfare, as defined in s. 39.01(47), to comply with the requirements of this section.
So call a company that provides car seats.