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NotMyOldRedditName

@ NotMyOldRedditName @lemmy.world

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3 yr. ago

  • Tesla Fans Furious at Video of Tesla Crashing Into Wall Painted Like Road

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  • A mile per hour is probably about right, but that's probably per lidar. Waymo has 4 for example, so on a 300mile vehicle that could be 17 miles at 70mph.

    Even if you can make it aerodynamic it's still not going to be as aerodynamic as it not being there.

    Sunk cost fallacy make sense, but I'd say it's also the fear of the massive lawsuit/upgrade cost if wrong due to his statements.

  • Tesla Fans Furious at Video of Tesla Crashing Into Wall Painted Like Road

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  • Ya, no redundancy is a problem for sure.

  • Tesla Fans Furious at Video of Tesla Crashing Into Wall Painted Like Road

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  • Because the car actually does stop for things that aren't fake walls made to look like a road, and at least for people as tested by testing agencies

    This is the euro NCAP testing.

    https://youtu.be/4Hsb-0v95R4

    Note: not all of these cars have lidar, but some do.

  • Tesla Fans Furious at Video of Tesla Crashing Into Wall Painted Like Road

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  • Oops haha, 10 seconds.

  • Tesla Fans Furious at Video of Tesla Crashing Into Wall Painted Like Road

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  • That's not really true.

    He use lidar in SpaceX because he knows it's the right tool for their specific job.

    His stance is it's not that cameras are better, but that cameras have to be so good for a truly AV that putting effort into both means you're not going to make your cameras good enough to do it and rely on lidar instead. That and cost.

    If the car can't process and understand the world via cameras, it's doomed to fail at a mass scale anyway.

    It might be a wrong stance, but it's not that lidar is flawed.

    Tesla even uses lidar to ground truth their cameras

    Edit: just adding a late example - Waymo, Cruise, and probably everyone out there still use humans to tell the car what to do if it gets stuck. I even bet Tesla will if they ever launch a robotaxi as they need a way to somehow help the car if it gets stuck. When we see these failures with Waymo and Cruise, it's less "is something there" and more "I don't understand this situation". The understanding comes from vision. Lidar just gives the something is there, but it isn't solving their problem.

  • Tesla Fans Furious at Video of Tesla Crashing Into Wall Painted Like Road

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  • They were much more expensive years ago when the decisions were made to not use it. Costs have come down a lot. And cars can have more than 1 if you're going to use it. That also means more compute needed so a stronger computer and more power draw meaning less milage, which means bigger battery for same mileage. It all adds up.

    Edit: might even impact aerodynamics, which again means more battery, which is more expensive.

  • Tesla Fans Furious at Video of Tesla Crashing Into Wall Painted Like Road

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  • Any crash within 10s of a disengagement counts as it being on so you can't just do this.

    Edit: added the time unit.

    Edit2: it's actually 30s not 10s. See below.

  • Self-Driving Tesla Crashes into Wall Painted to Look Like a Road… Just Months Before Planned Robotaxi Launch

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  • They get filtered out and the car will not act on it because there is so much noise from stationary objects all around you. The car essentially wouldn't drive at all if it didn't filter them out.

    At high speeds, the radar in all cars is used to detect moving objects and the change in velocity of those objects.

    Radar will not prevent running into this wall at 40mph.

    People can downvote me all they want, but that doesn't change anything.

    Only vison and / or lidar would stop for that wall at 40mph.

    Edit: aside from clarity on the above this is the expected outcomes

    Radar in cars today: hit the wall

    Vision: probably all hit the wall but could be sufficiently programmed to not if they trained on it.

    Lidar: would not hit the wall.

  • Self-Driving Tesla Crashes into Wall Painted to Look Like a Road… Just Months Before Planned Robotaxi Launch

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  • Radar doesn't detect stopped objects at high speed. It'd hit the wall too on radar alone.

    This has to be solved by vision and or lidar.