How does one commit unauthorized use of a motor vehicle?

The correct answer is using a vehicle without permission, which encapsulates the essence of unauthorized use of a motor vehicle. This offense primarily revolves around the lack of consent from the vehicle's owner or authorized user. When an individual takes or operates a vehicle without any form of permission, they are committing a crime, as the act directly infringes upon the owner's rights and property.

Borrowing a car without informing the owner could suggest a gray area in legal terminology and may not always be classified as unauthorized use, especially if there is an implied or prior consent; thus, this scenario does not universally apply to all situations of unauthorized use.

Using a vehicle for more than 24 hours also fails to capture the fundamental aspect of unauthorized use since duration alone does not determine the legality of the usage, as permission could have been obtained initially.

Driving someone else's car after being invited suggests that consent has been given by the vehicle's owner, making the act permissible and therefore not fitting the definition of unauthorized use.

In summary, the crux of unauthorized use is the absence of permission, making the correct answer fittingly precise.