>>150001108
Uses spikes on the bottom to pick up litter
Uses spikes in the middle to eviscerate it, rendering it small enough to be picked up by runoff and flow into the drainage system
They're both made out of the same cylinder because it's cheaper from a manufacturing perspective

>>149783111
Flying cars will never happen unless we actually develop effectively FLAWLESS self-driving technology capable of navigating space in all three dimensions along with engines with pretty much no possible way of failing. Imagine some drunk motherfucker crashing his flying car into the 30th Story of a downtown Manhattan skyscraper, or just the fact that any kind of crash is almost guaranteed to be failure from the fall. Nobody's doing that shit until it's basically impossible to crash one of them.