Which revolutionary invention was marketed with the famous tagline 'Better than walking' but became one of the biggest product failures of the 21st century despite raising over $100 million in funding?

Throughout history, many revolutionary inventions have been brilliant from a technical perspective but failed catastrophically in the marketplace. Sometimes timing was wrong, marketing fell short, or competitors simply outmaneuvered them. This poll tests your knowledge of famous product failures that, despite their innovative nature, couldn't capture sufficient market share to survive. Can you identify which groundbreaking invention suffered a particular market fate?

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Segway Personal Transporter
Google Glass
Betamax Video Format
Palm Pilot