Never in my nearly 20 years of test-driving cars has my opinion been swayed like it has been here. Sure, more horsepower can cure some ills but this new Q50 Red Sport 400 from Infiniti is a transformative sport sedan experience. Those were my sentiments 2 years ago about Infiniti’s new Q50; a car with a groundbreaking though poorly executed steer-by-wire system so aloof that it ruined the entire experience. I opined that Infiniti not only needed to reprogram it but that they should make it a standalone option, both of which I’m happy to report have come to fruition.