Because fiberglass carries the electrical current
Yes and No, It IS safe to be in a car when there is lighting if it is metal since its a conductor but it is NOT safe inside a fiberglass car since it is an insulator.
The Chevy Corvette was not the first car built with a fiberglass body, but it was the first to be mass produced.
Some say that working on a steel car is a lot less messy or difficult than working on a fiberglass car. This is due to the tools and knowledge required to work with steel vs fiberglass.
A person is safe from lightning inside a car with a metal body because the metal acts as a Faraday cage. When lightning strikes the car, the metal body acts as a conductor, directing the electrical current around the occupants and safely into the ground, protecting them from electrocution.
The Glasspar G2 was a sports car body first manufactured by Bill Tritt in 1949. It is no longer built today. It was the first production all-fiberglass sports car body built by an American fiberglass manufacturer.
Sand the fiberglass with a 400 - 1000 grit sandpaper so you can not feel a difference between the fibergass filler and the body of the car. Now you can prime it.
Fiberglass has been used for decades. The original 1953 Chevrolet Corvette body was made of fiberglass. The Glasspar G2 built in 1949 was made of fiberglass but they just made bodies not a complete car. The Kaiser-Darrin 161 built in 1954 was also fiberglass.
Steel, fiberglass, carbon fiber, stainless steel, plastic, rubber. Depending on what manufacturer, 'trim' of car, and what body part. For example a car often has steel doors, (safer in a collision..... if you got hit would you not want to be sitting inside a steel door?), and fiberglass or plastic bumpers
Bondo is the industry standard.
Depends on the car; Some use plastic, others fiberglass, still others use sheet metal (aluminum or steel).
Steel is typically the framework. The body can be steel, aluminum and/or fiberglass. There is also experimentation with carbon fiber.
fiberglass isn't meant to attach a bumper to a car, and even if you try it depends of the material of the car and the bumper ( fiberglass, steel, aluminum, rubber, etc.)