Since I could not afford either I would choose the P4 for being the best looking car ever made, but if there is a car I wish I had, that I could have, it would be a Datsun 510. As a middle class baby boomer I remember how they were an affordable, reliable car with an overhead cam and quarter axle rear suspension. I was still in school and could not afford one, but I remember it being the car aspiring motor heads of that era realistically lusting for.