Rust
If we import 1.4m bicycles into Australia every year then that means roughly 1 in every 20 people get a new bike very year.
Lets assume half of the population will never ride, then that means the rest of of the population (that might ride) gets a new bike every ten years or so (assuming most of them only have one bike at a time).
Which seems about right. After ten years in the garage doing nothing the thing will look old-school and be pretty rusted.
Circa 95% of sales are vanity sales to people with resolutions, that will probably only use the product once. Its an evil marketer’s wet dream.
