[nabilhat]

Velomobiles are a fascinating example of a domain which keeps getting reinvented over and over! The 'glass ceiling' cab has been a feature that keeps showing up on independently developed velomobiles, despite the prior experiences of models like the Go-One and Twike. If the interior is reflective or a light color that doesn't absorb sunlight, it reflects back in the screen, creating glare. If the interior is dark enough not to cause glare, it becomes a solar oven. When it's cool and cloudy enough that the sunlight exposure isn't a problem, condensation sets in.

[medstrom]

Just a layman, but it seems like you could solve the heat and condensation by adjusting ventilation.