Cardboard bike supports over 400+ lbs rider

[Melalvai]

I saw that it was painted - but how long before it gets rubbed or scratched? Especially considering the braking surface is also cardboard......

Well, it's a $9 bike. Suppose it lasts a few months before it gets scratched and then gets wet. Still a good value!
Maybe it will be more popular in dry climates and not as big in the Pacific northwest.