McLaren provided flights from Washington, DC, to Ivalo, Finland, and accommodation so Ars could drive its car on a frozen lake. Ars does not accept paid editorial content. SAARISELKÄ, FINLAND—If ...

Modern traction control is good. Even on pedestrian cars. I've given up trying to teach my wife how to deal with sliding in the snow because her Prius just ... won't at any reasonable speed and turn.