2. Scion Hako Coupe

Inspired by classic American coupes and Tokyo street fashion, the 2008 Scion Hako Coupe concept offered a unique boxy silhouette, wraparound glass, and a tech-heavy interior. Its playful, retro-modern design stood apart from mainstream offerings. Though some elements influenced the Scion xD, the distinct, youth-oriented charm of the Hako never materialized in production. (cars.com)