Possible Clues:

• Bridge team that's in switched-off state - it can't last
• Damaged car in tense passing situation
• Directs one to end thus missing start in short stay
• Ephemeral nature of rotting nectarines
• Fleeting quality
• Ephemerality
• Impermanence
• Quickly passing state as Simon ultimately follows Garfunkel's return — calm line taken
• Ephemerality unusual in art scene