Referring to a car as being sexy probably doesn't mean that the speaker is sexually attracted to the vehicle.
It probably just means the speaker was using the figure of speech known as personification.
Most native English speakers who are at least of average intelligence understand this. However, the concept could in fact be lost on non-native speakers who don't have full command of the language yet, as well as native speakers who are dull-normal, or who are on the spectrum for autism. (edited)