I hit the lifetime for my Honda Navi drive belt at 11k miles. This actually forced me to upgrade to a better belt because the stock belts were out of stock lol a new belt was less than $10 and I gained 5MPH top speed but lost some acceleration. The material for my box is actually designed for vinyl hahaha its used for real estate signs commonly. It's called coroplast and it's like a plastic cardboard. It works great for food delivery as I can clean it super fast and easy and its waterproof. I have over 1500 deliveries for Doordash and every town I go to I am the only person doing anything like this.