Advertised as the "Driving Man's Economy Car", the Datsun 710 replaced the classic 510 in 1973. It was reliable enough, but the weird styling didn't do it any favors, and, well, just compare it to the 510. Also, it seemed unsure of what it was supposed to be. Economy car? Sporty car? Semi-luxury car? Oh well, today their weirdness and uniqueness makes for an interesting find. How can you not like those curvy windows?