I worked with Vanja before EVs were mass produced, he is very driven and smart, but also eccentric. With his previous experience with Mercedes Electric repair he figured out that, sooner or later repair/knowledge/tools will get commoditized, so push at the start and try to get a big foothold/mindshare before this happens. Very few people actually have the knowledge to judge your work early on, so you can get very far if you are intentionally promoting yourself and behaving very confident.

His Tesla Battery cell repair stuff, anyone that was near a open battery knows it's fucking dangerous thing that has VERY low chance of actually working in medium term - but it gets him a lot of respect by clueless people. But he also does good stuff, but his image and reality are VERY different things.