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Plane travel isn't a day-to-day event, even for those wealthy enough to afford private jets. You still have to pack, travel to an airport, get on the plane, crew has to be made ready, flight plan has to be filed, etc. It's a high-impact event that occurs at most every few days, even for frequent flyers.

Driving is a day-to-day task. My time's already short, if I have to add an extra 5 minutes waiting for pickup every time I want to go anywhere (once again an optimistic estimate, it would likely be closer to 10), on a busy day that's a minimum extra hour a day of time I've lost just standing on the sidewalk. Margin matters, even an extra 15 minutes a day adds up to over 90 hours a year.

Also these rental services/configurations will hardly be free. So the cost of the car/maintenance isn't eliminated entirely. For my situation, given that I've been driving the same car for the last 11 years, and it was ~16k when I bought it, plus maybe an average $1200 a year in insurance, and maybe an average of $300 a year in maintenance that means I've spent an average of $2,954.54/year over the last 11 years on car ownership. And that number is only going to get smaller unless I buy another car.

But in this scenario I'm losing a minimum 90 hours per year on the margin. If those were work hours, then at my current take-home rate I can decrease that number down to around $1065/year going forward. Given that I'm likely going to make more money as the years go by, these continuous rental services are going to have to be awfully cheap to be worth it for my situation, and I don't think I'm too far from the average.

Now sure, if you're buying a new car every 4 years like some people do then it might be worth it. Or if the cost of insurance is prohibitively high in your given location. Or if your job sucks and you just can't afford a car. Or if you actually need a broad variety of vehicles on a regular basis. There are lots of factors that go into it, but for anyone who's middle class or better I don't think it'll supplant ownership entirely. Or maybe it will and I'll just be with the sour-grapes number-crunchers in the corner ranting about margin to anyone who'll listen. :)



> Also these rental services/configurations will hardly be free. So the cost of the car/maintenance isn't eliminated entirely. For my situation, given that I've been driving the same car for the last 11 years, and it was ~16k when I bought it, plus maybe an average $1200 a year in insurance, and maybe an average of $300 a year in maintenance that means I've spent an average of $2,954.54/year over the last 11 years on car ownership. And that number is only going to get smaller unless I buy another car.

Nope, but they will be commoditized. If you have a car that all you have to do is pass it an API key and a location, there's not much value a ride sharing service can add to that -- which means there will probably be a bunch of them. Which means that the price to the consumer should be something close to [ (marginal cost of ride) + (depreciation cost of ride) ] * 1.03. And the cost side of that will benefit from scale for the business, but not the consumer.

Basically, once it's commoditized, it will cost you more to do it yourself than to pay someone to do it for you. Just like with currently commoditized services like AWS, there can still be good reasons to do it yourself -- but those tend to be special cases rather than the norm.

> But in this scenario I'm losing a minimum 90 hours per year on the margin.

Err, I'll play along. If you were in an autonomous car (or even a current ride-share), you could just work while en route rather than drive. I'm willing to bet you spend more hours sitting in traffic today than you ever would waiting on a car to arrive.


Well hey if it somehow costs less than then I spend on car ownership in a year, then sure! All just depends on how much my time's worth/how much these services charge if/when they come around. But right now the sum total of rides per year, whatever the cost model, would basically have to be sub $1000 per year to make sense for me. Cheaper if I end up making more money as time goes on. If scale and commoditization can accomplish that then I'll happily embrace a new golden age of transportation.

As for the rest, keep in mind we're comparing renting an autonomous car vs owning an autonomous car, not renting an autonomous car vs driving. So the actual rides are equivalent. The time difference is me getting in my car and telling it where to go vs me hailing a car, waiting 5-10 minutes for it to arrive (where my capacity to do any meaningful work is basically nil) and then tell it where to go, a minimum of 3 times a day. Maybe up to 12 times a day on a busy day. That's not an insignificant time loss over the medium/long term.

Granted it's all hypothetical and the actual value of the time lost would be highly situational, but it would be one of those small daily time-sucking inefficiencies, like walking into the other room to get paper towels as opposed to just putting a roll in the kitchen. When you do them every day, those add up.




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