Creating the interstate systems did kill trains but also greatly influenced where cities and economies sprang up. It also made the US a car culture and locked it in, which worked great for big areas of undeveloped land at the time, and allowed people to move around more freely.
I'd love a president or government in the US to do the same and make an electric car interstate system, basically just giving it to companies like Tesla or others with conditions. Basically start adding electric car charging stations and add an iteration to the interstates, make them self-driving capable and more.
Or a president or government policy to get gigabit broadband across the nation as a new baseline of digital transportation of data that will open up unforseen new products and markets.
Yes he did. A few examples of what oil/car folks did: dismantle public transit, make sure negative externalities of cars are not directly paid, lobby congress to pay for 90% of highways and make transit funding less/harder to get, get into wars for oil, take over planning departments at highly regarded colleges and change curriculum to churn out car focused planners.