Unveiled at the FRANKFURT MOTOR SHOW prove that automakers are still thinking small when it comes to future vehicles, and that the rise of the crossover is just beginning. The most striking example is the Audi Nanuk Quattro — an odd mashup of sports car and crossover body styles. And perhaps most interesting is how every Frankfurt concept car showcases technology and design sure to be seen on the road in years to come. That's a big change from years past, when many concepts cars were tantamount to sci-fi fantasies that never materialized into anything real. Let's take a look.