maybe i am getting to old or to friendly to humans, but it's staggering to me how the priorities are for such things.
1) Build fully autonomous cars so there are zero deaths from car accidents. This is ~45K deaths/year (just US!) and millions of injuries. Annual economic cost of crashes is $340 billion. Worldwide the toll is 10 - 100x?
2) Put solar on top of all highways.
3) Give money to all farmers to put solar.
4) Build transmission.
And many more ...
The Manhattan Project employed nearly 130,000 people at its peak and cost nearly US$2 billion (equivalent to about $27 billion in 2023): https://en.wikipedia.org/wiki/Manhattan_Project