A rental car.
Other than that, it depends on what you're looking for in particular and what sort of bad roads you are referring to. Are you looking for something with a smoother ride for rough roads? Greater ruggedness to handle long term rough road abuse year in and year out? Higher clearance or four wheel drive for primitive unpaved roads? All wheel drive for positive traction in snow, ice and gravel? Electronic anti-skid system?
Etc, etc, etc. The answer can only be as good as the question, Gabriel, and your question is extremely vague. Try again.