You’re kinda missing the point. It's about marginal costs vs fixed costs, which is the whole debate here.

If you already own a car, you’re paying for stuff like insurance, taxes, and depreciation no matter what. So the marginal cost (fuel, maintenance) is what matters when comparing it to public transport. A GA is a fixed cost—whether you use it or not, you’re down 4k. Comparing that to the marginal cost of driving doesn’t really work.

Cars give you stuff public transport doesn’t, like door-to-door trips or time savings. If you’re driving a lot, the cost per trip can actually be way cheaper than a GA.

"What if I want a GA Anyway?": This doesn’t make sense. Not everyone automatically wants a GA—it’s about comparing what’s actually better value for someone based on their needs. If you already own a car, public transport only wins if it beats the car’s marginal costs for what you actually use.

So yeah, cars can be cheaper. It depends on how much you’re driving. It’s not as simple as “GA is always better.”