Let’s not forget the cost of boron. The article says you need 18 kg of boron to produce an amount of power equivalent to 40 litres of gasoline, which is a rather small tank. (My Buick has a tank that holds over 60 litres.) So we need at least 18...

As a really old chemical engineer, I agree with Michael’s comments, as well as those of Mel. Obviously, energy is needed to extract the boron in the first place, and the amount required has to be at least as much as is made available to drive the car...