Minivans are the worst drivers on the roads, multiple companies will do the same routes and they race to pick-up passengers along that route before the next company. They will move quite fast when empty and pushed hard so the drivers get used to pushing them near their limits. Then the van is loaded up and weights twice as much, but they drive the same and now they are driving past the vehicles limits.
The buses though are big torquey things that just chug along at pretty much the same speeds regardless, and the drivers arent usually competing with other drivers to get to waiting customers first. They seem to be in no rush whenever I'm on one, which is often.
Cars are just uneducated and irresponsible.

Bikes are reckless.

Minivans are uneducated, irresponsible, reckless and racing to compete for customers. Avoid them if possible!