Ok so roads are important infrastructure. A lot of stuff that's important happens on roads. Now, let's imagine that quadrillionaire Matt Stench has decided that the next big tech innovation is the Wide Car. It's a car that takes up six lanes despite seating only one passenger.

The Wide Car is supposed to be the future, and everyone's going to be driving Wide Cars, even though nobody who makes Wide Cars is turning a profit. Employers are offering Wide Cars as an employee benefit, and getting "nah." Some employers are going as far as demanding their employees drive Wide Cars, and the result is that people take time out of their workdays to get in the mandatory gas usage for their Wide Car before driving home in a regular car.

In spite of the fact that the Wide Car is clearly set to fail, there's an enormous push to expand to twelve-lane roads to accommodate a bunch of Wide Cars that simply will not materialize. This is not an organic response to demand, but a speculative investment that amplifies the existing issues with road development for no good reason.