[ucho]

> perfectly clean sensors

I saw thin layer of ice appear on parking sensors after few minutes of driving in snowy conditions, triggering "close object" warnings. And cars get dirty all the time, I wonder if cars will end up with separate wiper for each sensor.

[Animats]

Google has a wiper on one of their car-top sensors. Another trick is to alternately spray wiper fluid and air to clean sensors. We had that on our DARPA Grand Challenge vehicle, and the upcoming Continental LIDAR seems to have a spray nozzle. The SICK LMS is available with a scanner glass with heating elements, so ice can be cleared. All those problems have been solved by good mechanical engineering.

[falcolas]

> All those problems have been solved by good mechanical engineering.

And yet we're still limited to scraping blades made from rubber over tempered glass with the help of a bit of liquid cleaner...

Given how bug guts require a good bit of manual scrubbing to clear off a windshield and the cumulative impact of rock impacts, I'm not convinced they'll stay clear for any meaningful amount of time - at least not on a commuter vehicle timescale.

Heated glass will help, but it's not a guaranteed thing; ask anyone with a rear window defroster how long it takes to clear ice and snow off.