Just to add another data point, the co-CEO indicated on a podcast 18-months ago that the sensor package cost was <=$100k for the then current generation:

"But saying, you know, picking an upper bound, $100,000 worth of equipment on it, you amortize it over, you know, the lifetime, call it, say, 400,000 (miles), 25 cents per mile. Right. And, you know, it gives you some margin compared to the cost of paying a human driver."

He also mentioned that the next generation would see a "drastic reduction in the cost".

https://www.shack15.com/podcast - ep41

Those Jaguars they drive are not going to last 400,000 miles without several significant overhauls. And interiors will wear out and have to be refurbished. Exteriors will get dented and scratched. Is all that part of the $100k they are amortizing?

Waymo Driver 5 was introduced in 2020. Driver 6 was introduced August of last year. So if the interview was 18 months ago he would be referring to Driver 5.

Driver 6 hardware is probably built in batches of a few hundred each. Still a low volume CM job, but incrementally cheaper. Probably. If they start building in batches of thousands, that's going to drive costs down significantly.