We have no shortage of good ideas or socially useful things to do. What we have is a problem with getting funding for these useful pursuits.
https://en.wikipedia.org/wiki/Parable_of_the_broken_window
In this case there are probably some highly skilled people involved who were able to increase their know-how (doing research to make the car somehow be xxM$ worth) thanks to being funded by whoever bought the car, but the whole exercise generates probably very little intellectual value outside of this context.
Why do you assume that the R&D required to produce this vehicle is somehow wasted effort?
Or maybe you can realize that moralizing about what other people do with their own money is the absurd and obscene thing.
Someone with less money than you could say the same thing about a lot of your purchases from your discretionary income. The people paying for a $13m Bugatti are likely spending a lot in taxes which is generally how society has agreed upon people benefiting society through their spending. You could argue for higher taxes but that probably doesn't impact much spending for these people who own 80+ cars and have $13m+ to buy a car with.
There may come a time in the future where Bugatti makes cars that aren't even drivable. It won't matter. People will still buy them. They could make an engine block out of solid gold and sell it and people would buy it just for the novelty.
But hey, that’s how you know it’s art. Two people can look at the same object and think the same thing for two different reasons.
I hate this argument of "I could have done something better with x", it's reeks of authoritarianism. Yes, there is a better way to spend money, if you decide what "better" means, which you don't, because it's not your money.
Taus are boring. Be dark eldar and enjoy the good stuff in life.
Hardtimes satire.
I think the kind of people buying $13 million cars often neither know nor care about the state of the world outside their bubble of luxury.
The idea that they get money for nothing and spend it all on luxuries is very misguided.