The Soybean Car was actually a plastic-bodied car unveiled by Henry Ford on August 13, 1941 at Dearborn Days, an annual community festival. The frame, made of tubular steel, had 14 plastic panels attached to it. The car weighed 2000 lbs., 1000 lbs. lighter than a steel car.
The second brain contains some 100 million neurons, more than in either the spinal cord or the peripheral nervous system, Gershon says. This multitude of neurons in the enteric nervous system enables us to feel the inner world of our gut and its contents.
The total number of neurons in the brain of a human is around a hundred billion. Inside the motherâs womb, brain cells grow at an astounding rate of 250,000 neurons per minute. The longest axon in the human body extends from the tip of the toe up to the neck. It measures fifteen feet in length.