Yes. The beer mug is easy to clean. Dishwasher safe, no dishwasher? Manual cleaning is also possible. Learn more about how to clean.
Yes. Beer mug are compatible with most cup holders. Very portable. Here is a kind reminder, do not drink and drive.
The beer mug will not rust under normal use because the material is 304 stainless steel. If there is really rust, you can wipe it with a polishing cloth.
Of course.Beer mugs can be used for hot and cold beverages. But be careful not to use the beer mug for carbonated beverages for extended periods of time.