

Like what? Are there special roads that busses can drive down but a sedan gets stuck on? Some kind of road made especially for the tires of the bus and no other vehicles? Like a tram system, or gondolas maybe?
Cars and busses are both road vehicles, and roads serve them both. We can put up signs and write rules about which vehicle can go where, but those are basically free to change.
I thought I had read something about this, but I can’t find a source, so take this with some salt.
Even big cats chitter, and while sometimes there’s a social aspect where other cats are alerted to the hunt, not all big cats hunt in groups. So I think they chitter to warm their jaws up. Like streatching before exercising, or the jitters you get from adrenaline, the rapid movements ensure they can bite at maximum strength quickly, and without pulling a muscle.