Peltier-based heating/cooling cupholders are a real automotive application where Peltier reversibility is useful, but this niche application has not been widely adopted despite being technically feasible, suggesting limited practical demand even for specialized use cases.
factualpending
Evidence Quote
“heated and cooled cupholders in cars is one application for this in real life... But, in all honesty, that's mostly a gimmick. I saw it at the auto show when I was maybe 12 and it hasn't taken the world by storm yet.”
Created: 8/13/2026, 9:53:39 AM
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