In this episode, we round up some examples of promised gadgets that never delivered. From a self-adjusting belt to a pair of camera glasses promoted by Lady Gaga, this episode is all about vaporware.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices