Two cars are at the top of a hill. One car is just a simple wheel axle car (not power), one car has a spring suspension system. Which one will reach first?

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Two cars are at the top of a hill. One car is just a simple wheel axel car (not power), one car has a spring suspension system. Which one will reach first?

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I would say, it depends on the roughness of the hill. If it’s ideally smooth, in general it should not affect the velocity.

However, if the surface has bumps, we can see that one car will reach first.

What car?
It’s tricky, because suspension system has it’s own energy that adds it’s value to the conservation of energy. And it depends on the number of bumps, suspension characteristics, like spring rate, damping rate. In this case we have to solve differential equations.

But maybe I just overthink this problem…

Thoughts?