When you hear the name Jaguar you probably envision a sporty little coupe or roadster like the F-Type, tearing up some canyon road making menacing sounds. But the British brand's 4-door lineup is also ultra-impressive and comes in 3 sizes. This is the new middle child, the 2017 XF. Any concerns about Jaguar’s future after the Tata Motors takeover in 2008 have been assuaged by a bevy of wonderful new …