The Mazda Raceway at Laguna Seca is a 2.2-mile asphalt roller coaster plunging and soaring across California's tawny Monterey highlands. The most famous section, the Corkscrew, requires drivers storming up a long hill to slam the brakes and take a hard left into what seems to be thin air. The car goes momentarily weightless, and when the track materializes beneath you—always a pleasant surprise—it's going downhill like a ski jump—and, oh yeah, heading hard right.

This is one of several blind corners at Laguna Seca requiring...