Souped-up Drag Boats of Thailand

I saw a short video on Reddit a few months ago that blew my mind and sent me in a fit of laughter. I’ll post that video first because this guy right here, this guy is living:
Little did I know that it wasn’t just one adrenaline junkie piloting/hydroplaning the rivers of Thailand in his modified riverboat, hitting speeds upwards of 70 mph (112 km/h), but there is a celebrated subculture of speed captains and absorbed onlookers supporting this (unregulated, non-commercial, super dangerous) stupid-fun activity.
Thankful to Chad from CB Media for investigating and sharing his insane motorsports experience: