The provided sources show that Sienna floor and cargo liners differ based on the 2nd-row sliding tracks and other specific seating configurations. When selecting liners for certain models, you must choose whether you want the 3rd-row liner to cover the 2nd-row sliding tracks for maximum coverage, which will result in "limited track mobility". Other factors include passenger capacity (7 or 8 passenger), super console options, power folding seats, and spare tire presence.

Feature List:

• Different liners based on 2nd-row sliding track coverage
• Standard vs Maximum Coverage options available
• Maximum coverage limits seat sliding distance
• Varies by passenger capacity (7 vs 8 passenger)
• Super console and power-folding seat compatibility
• Spare tire presence also affects cargo liner choice