Perhaps I should have posted this link first.
Hitler building the (first) Autobahn is a myth constructed by nazi propaganda. Repeating it is just falling for their lies.
That being said of course it is a very important piece of infrastructure today, but that is due to decades of car industry lobbying and the lack of funding for other transportation and transit infrastructure projects. Especially trains would be able to transport more people and goods faster if build properly.
Most work is done when the sun is shining. Appliances can be remote controlled or automated. Studies have show that only 10% of energy consumption has to be „smart“ to cut off 90% of the duck curve. The rest can be done with batteries and other storage.