Me gustó esta frase mucho, creo que es algo muy positivo en la naturaleza humana que nos ha permitido llegar a donde estamos hoy (link):

The flying car is a symbol of fantastical, futuristic optimism colliding with reality. It’s shorthand for our inability to predict the future and our simultaneous refusal to stop, even in the face of our incompetence. We dream about driving flying cars in childhood and never outgrow the fantasy of their existence no matter how well we understand the obstacles.