What vehicles had the first power window?

There's no single definitive answer to which vehicle *first* had power windows, as the development was gradual and different manufacturers implemented the technology at slightly different times and in different ways. Early power window systems were often unreliable and not widely adopted.

However, some of the earliest cars to feature power windows (usually only on the front windows, and often as an optional extra) include high-end models from the late 1930s and early 1940s from manufacturers like Packard and Chrysler. These systems were far from the sophisticated systems we have today. They were often slow, less reliable, and prone to failure.

Pinpointing the absolute "first" is difficult due to a lack of comprehensive historical records covering all automotive manufacturers and their experimental prototypes.