Audi’s luscious R8 is beautiful to behold, easy to live with, and simply marvelous to drive—all the qualities you’d want in a sports car. The base engine is a 5.2-liter 540-hp V-10; the V10 Plus makes 610 hp. All-wheel drive is standard, as is a seven-speed automatic. The handsome interior features a 12.3-inch configurable display in lieu of traditional gauges; there is also 4G LTE connectivity and Wi-Fi hotspot capability. Only a coupe is offered for now; expect the Spyder version this summer.Encased under glass and lit up like a museum piece, Audi’s ten-cylinder totem to human ingenuity looks as if it should be accompanied by a soft-spoken docent to narrate its very existence: At 610 horsepower, this naturally aspirated 5.2-liter V-10 is the most powerful engine ever put into production by Audi. It revs 20 percent quicker than its predecessor, spinning from idle to its 8500-rpm redline in 0.66 second.