2015 Infiniti Q70

The Infiniti Q70 -- previously known as the M (or the M37 or M56) -- doesn't just serve as a very stylish, sporty luxury sedan, but also as the flagship sedan of the Infiniti lineup. And fittingly, this year the Q70 gets a new long-wheelbase model that may plot the Q70 more directly against flagships like the BMW 7-Series and Jaguar...