The Slovenian e-vignette is always linked to the vehicle’s license plates and never to a person or other vehicle specifications.
Please note: When purchasing the e-vignette the correct vehicle type and height (above or below 1.3m at front axle) have to be chosen or you are subject to heavy fines.
Related articles:
How is the Slovenian vignette checked?
Can I change the license plate on a Slovenian e-vignette?
Can I transfer my Slovenian e-vignette to another car?
Can I buy the Slovenian vignette for someone else?
What different types of the Slovenian motorway e-vignette are available?