All vehicles shall be new and current model year and be based up on the configurations outlined herein. The vehicles body shall be constructed of prime commercial quality steel or other material with strength at least equal to steel. The body shall be constructed to meet or exceed all state and federal requirements in effect at the time of manufacture. Internal skeletal structure shall be welded. Screws, rivets, or huck bolts are not acceptable. The manufacturer’s most favorable warranty offered to preferred customers shall apply to all items. A copy of such warranty shall be furnished to the agency upon delivery of the equipment or product. The successful dealer will not be liable under the above warranty for any defects or damages resulting from unforeseeable causes beyond the control and without the fault or negligence of the bidder, such as misuse or neglect by the State, acts of God, fires, floods, and hurricanes