Food production is already absurdly automated. At least for grains, in theory you don't even need humans to drive the tractors on the fields any more, drones and RTK GPS systems automate all of it from seed to harvest. Cattle is fed and milked fully automated as well, with precise tracking of how much each cow ate and how much milk it yielded. Chicken also don't need much human work to lay eggs.

Most societies up to industrialization had a primary (i.e. agricultural) sector of around 50-70% of employees (numbers vary). Today, it's more like 1-2%, and the number is bound to fall - especially when lab-grown meat really takes off, because slaughtering and butchering farm animals _at the moment_ cannot be done by robots at scale and IMHO it's more likely that lab-grown meat succeeds before we entrust sharp knives to robots to actually kill animals.

> Who will fix our cars?

Modern cars - particularly electric cars - are much less maintenance intensive. That's part of why many established car brands are in serious trouble with their historically grown dealerships... "life long oil fills" and general improvements in technology already cut back on a lot of income from repair and maintenance of dealerships, and electric cars have far fewer failure points (other than crappy software) than ICE cars. We simply won't need anywhere close to the current number of service points, and we also won't need gas stations with trucks that fill up their tanks as the cars will be charged through the existing grid.

> Who will fix our potholes?

I 'member a story of some bloke holding up a sign like "I filled the potholes, pay me instead of your taxes". Local politics is on a downward slope across the Western world (with a common factor being the central government depriving local governments of revenue or loading off expenses to local levels), I think we're going to see a lot more of such incidents.

In any case, the price of trades labor will have to increase to be an effective incentive. And if you ask me, better pay the tradespeople than the vampires and vultures of Wall Street. At least the tradespeople do something to keep this society alive, the banksters do not.

The economic incentive doesn't just vanish because people have a little more money. Notwithstanding, a lot of people enjoy the work of being a mechanic.

I like fixing cars, I enjoy doing it for my friends and prefer to do it for free.

I love to do a little paving, once in a while, it's surprisingly satisfying.

I actually really like to work, I just hate having to be employed.

I expect that I'm fairly normal in that.

I wouldn’t mind farming if it wasn’t for the need of money. There’s a lot of risk involved. I also don’t mind fixing cars, it’s just in today’s world I can work and make more money in an office - and it requires enough hours that I can’t do mechanical work at all, there’s not enough time and I have to pay for those.

I will happily fix potholes and produce food for UBI, after being horribly burned out by 20 years in software companies.

> Who will fix our cars?

Somewhat related: when do we get a truly user-serviceable automobile, something like a four-wheeled motorized version of a Fairphone or Librem. Set a max speed on them to simplify the safety requirements. Urban putt-putts.

Then you'll find enough mechanics.