It reminds me of the old story about the inventor in the late 1890s, who claimed to have invented a car that could cross the United States running on just a gal

It reminds me of the old story about the inventor in the late 1890s, who claimed to have invented a car that could cross the United States running on just a gallon of water. After failing to deliver a tangible product for years, investors pushed him to either produce his vehicle or return their money. The inventor refused, saying that he'd now come up with an even better version that could cross the United States on just a single thimble of water, and it would be beneath his professional pride to release an inferior product, so he had no choice but to continue his research.