I'm a big believer that fiction shapes the future in a multitude of ways. In some cases, I believe today's product designers are basically implementing the fantastic worlds of their youth. Two examples caught my eye this week:
Lockheed has developed a large airship that floats in position for intelligence gathering. Right out of science fiction, see Long Endurance Multi-intelligence Vehicle (LEMV) - Gizmodo for a peek at the forthcoming war machine.
Also recently announced, Nissan is addressing the safety problems of nearly silent hybrid vehicles by making them sound like flying cars in the movie Blade Runner. See this LA Times article.
Personally, if a hybrid car sound like the flying cars on The Jetsons (sound file link) I'd so buy it.