Which Design Element Represents Today's Optimism, or Lack Thereof?S

With Lieberman out trying to wring a straight flush from three of a kind, today's Question of the Day comes from frequent tipster Sean.

Tail fins reflected the [1950s] era's optimism about technology, as best represented by jets. What design trope would reflect this era's optimism? The iPhone?
Perhaps that would be the iDrive? Or does that represent how technology can make a trip to the supermarket an MIT-grade exercise. What say you?