Owning a car is not bourgeois. Owning a business is.

If you could stop going to work tomorrow and still pay your bills because your assets are generating sufficient income to cover your expenses and still accumulate, you're in the capital class. If you trade your time and labour for income and quitting work would mean your resources will get depleted, you're working class.

And if you think that you're not working class because you sit in an office and work on a computer, then that's exactly what the ownership class wants you to believe so you'll be happy with your lot and not rock the boat.