Thanks for the confirmation.
I am only aware of the heat problem because I have worked on cases before where folks have left their Jetpacks in their cars during summer. As the Jetpacks heatup they breakdown and stop performing. These users often find they have to find a better spot in the car with more protection from the heat or start carrying the Jetpack with them all the time.
The same problem happens for folks who leave their jetpack in an open window 24x7. The heat from the sun will start to cause performance problems sooner or later. Most of the time the damage isn't permanent.