8 ms·

> Nobody needs cameras replacing their sideview mirrors This measurably improves fuel economy. Not sure why it's grouped with the others.

• wcarron 3y ago
  Because it's another huge failure point of more software and significantly increases cost and complexity when the aerodynamic gains from no mirrors are negligible, especially considering the absolute monstrous size and brick like shape (terrible cda) of SUVs, trucks, and 'crossovers' that are extremely popular today.
  • recursive 3y ago
    > gains from no mirrors are negligible This study says 3% - 6%. [0] The fact that inefficient vehicles exist doesn't seem like a reason to make more efficient ones even more efficient. [0]: https://www.sciencedirect.com/science/article/pii/S1110016821004129 https://www.sciencedirect.com/science/article/pii/S111001682...
    • smileysteve 3y ago
      3-6% is almost free air conditioning 4-8%
    • wcarron 3y ago
      Fair. That's not nothing, but again, it's a tradeoff. I'd take a plain old mirror for the sake of simplicity/cost instead of the slightly higher efficiency.