Brandon Stroud was driving a golf car made by Textron, Inc., to transport guests at Christmas party. The golf car did not have lights, but Textron did not warn against using it on public roads at night. When Stroud attempted to cross a road at 8: 30 p. m., his golf car was struck by a vehicle driven by Joseph Thornley. Stroud was killed. His estate filed a suit against Textron, alleging strict product liability and product liability based on negligence. The charge was that the golf car was defective and unreasonably dangerous. What defense might Textron assert? Explain.