> Honda Insight

The (original) Honda Insight was a tiny 2-seater of a car, more tech demo than "ordinary" car, and perhaps it's the gift of hindsight but the Prius' popularity for with people that own one car, as a 4-door 5-seater car vs a non-sportscar 2-door 2-seater car seems all but guaranteed. (How many people do you know that own 2-seaters vs 5-seaters?)

Similarly, the vast majority of smartphones these days are (unfortunately) glass bricks, as first popularized by Apple. There were other interesting designs out there, but ultimately the iPhone design became the most popular smartphone design.