It is sometimes said that it is more fun to drive a slow car fast than it is to drive a fast car slow. Given that the Yaris can be driven flat-out the majority of the time without risking “demonstration of speed” violations, that it’s a blast to pitch around corners, that it’s capable of dicing through traffic with ease, and that nothing is more fun than outwitting a testosterone-dripping moron in a menacing Mustang thanks to the Yaris’s smaller size and better sightlines, yes, this is an entertaining car. Just keep it off mountain two-lanes and the expressway where its dearth of power and lousy steering make driving a chore.