I never saw many of them even on bike routes but we're probably from different parts of the world. Velomobiles, maybe I never daw one of them, only on YouTube.

I never saw many of them even on bike routes but we're probably from different parts of the world. Velomobiles, maybe I never daw one of them, only on YouTube. As the owner of a recumbent, how does it handle on dirt and gravel? Are they bitumen only?