Tesla Cybercab has about three or four times the efficiency and like a fifth of the price by having smaller, two person vehicles. Indeed, the vast majority of trips are taken by single people and it's ridiculous to have a giant machine for them. It would also be okay to have a handful of larger, Model Y-sized vehicles for the multi-person trips.
To actually answer your question: Part of the reason why the Waymo cars are so big is because they got a deal on buying all the Jaguar I-Pace vehicles, which checked several boxes:
* Electric vehicles and hybrids are preferable for self driving cars as they have robust electrical power for the sensors and compute
* Larger minivans or SUVs are preferable for both development work and early scaling up where you can't afford to have both smaller and larger vehicles
* The I-Pace wasn't selling well so they managed to snag the whole production batch
* Though Jaguar isn't exactly known for their great reliability and electrical systems, the I-Pace, manufactured by Magna Steyr, is actually decent
The first two reasons are why the Chrysler Pacifica Hybrid, the only hybrid minivan sold in the US, was so popular for early self driving car efforts (including with Waymo) in the 2010s.
That said, Waymo's Ojai is somewhat more space efficient than the older I-Pace. They also have the Ioniq 5 coming.
The cybercab would be almost perfect if it weren't for it's low height. It's easier for the elder to get into and out of taller vehicles.
I have one of the most inefficient EVs and it's only 2.4x hungrier than the cybercab. It can comfortably carry 6 adults. I've been in Tesla 3s as Ubers before. They only need 31% more energy than the cybercab.
If the cybercab was 1/5 the price it would be $14k. It won't be $14k.
The Waymo I-Pace is much less efficient than the regular roadgoing I-Pace. One X user posted a pic of the dashboard of a Waymo with 111,000 miles on the odometer, and it averaged 1.0 kWh per mile [1][2]. This is about 2.5x worse than the EPA rating of a normal Jaguar I-Pace. Probably the difference is because the Waymo has tons of compute and the sensors have a surprisingly large impact on aerodynamic efficiency. I was being generous to the Waymo in my original comment. If we compare the actual rating of the Cybercab at 165 Wh per mile, it would be 6x as efficient.
Also, whereas the stock Jaguar I-Pace was $70k, the Waymo one with all its sensors and compute have estimates ranging from $150k to $200k. In a comment made in late 2024, Waymo CEO Dmitri Dolgov mentions that the sensors and compute themselves cost $100k [3].
> The equipment on Waymo’s fifth-generation robot taxis — electric Jaguar I-Pace vehicles — costs as much as $100,000, Dmitri Dolgov, Waymo’s co-chief executive, said on a podcast in February.
That is the same generation as the current I-Pace fleet that makes up the majority of Waymos.
[1] https://eletric-vehicles.com/waymo/waymos-retrofitted-robota...
[2] https://x.com/niccruzpatane/status/2073967445509882286?s=20
[3] https://www.nytimes.com/2024/09/04/technology/waymo-expansio...
> Tesla Cybercab has about three or four times the efficiency and like a fifth of the price by having smaller, two person vehicles
I read this as Tesla Cybertruck and was mightily confused for a minute.
Looking it up in Wikipedia I see it has no driver support (steering, pedals, etc). Is that even road-legal?