Awesome idea!
Is there room underneath the cupholder recesses for the FI boost pump assembly?
... the red selector would be for "Pee NOW" and "Pee after precautionary landing."
Why not? Years ago Honda had cup holders in their "City" that would heat and cool their cup holders. Essentially it blew AC or heated air around the cup holders. That wouldn't be too hard to rig. At least the heated part. (Honda also made a little fold up motorcycle that would go in the back of their smallest car too. Maybe we could find a source for them to put in the back of our RV's?)One assumes that you have also installed the automatic thermostatically-controlled heater/cooler coils inside the cup holders.
Got a few extra amps of power available? There's always Peltier elements that could be put to use. Heat or cool depending on polarity, use a little fan and heat sinks.Why not? Years ago Honda had cup holders in their "City" that would heat and cool their cup holders. Essentially it blew AC or heated air around the cup holders. That wouldn't be too hard to rig. At least the heated part.