Both cars and microwave ovens are very common.
With most cars, you can figure out how to operate a new-to-you car very quickly. The ignition might be a different place than you are used to, but there only a few places where it can be. The accelerator and brake pedals (and maybe clutch pedal) will be in the same places. The list goes on; there are many similarities.
I wish it were that way with microwave ovens. For a fairly simple piece of equipment, there sure are a lot of variations on how to set the microwave oven to heat up something for one and a half minutes. Some of them are quite unobvious, even after several tries.
It is a good thing we do not have to drive microwave ovens.