I've watched a bunch of his videos a while back and he said he had a day job in the tech industry. But basically he's said he wanted a tesla without paying $$$ so he bought some salvage vehicles and did it as a hobby.
But with his channel starting to take off he might have transitioned to a youtube career. At this point he's probably funding a lot of it via youtube income.
Reminds me of Chris, who has the B is for Build channel on YT. He started rebuilding a few salvage cars (BRZ, Lotus Evora) on the side while being a software engineer. Ended up losing that job and now does YT full time basically rebuilding salvage or almost salvage cars.
But with his channel starting to take off he might have transitioned to a youtube career. At this point he's probably funding a lot of it via youtube income.