I suspect many of these people touting their nearly purchased Lamborghini and the like are actually just renting them. There was a reddit post where a similar

I suspect many of these people touting their nearly purchased Lamborghini and the like are actually just renting them. There was a reddit post where a similar "influencer" described the process of faking the purchase. He would go to a showroom and ask to sit in the vehicle and film it. Most of the time, if the salesperson isn't busy they will let you do this. Sometimes even let you start it if they are nice. This influencer would just then record a conversation in another car about buying and taking delivery etc and dub over the video of him in a show room. Pretty straight forward.