Scion iQ Concept. With the growing interest in the U.S. for more fuel-efficient vehicles, microcars like the uber-popular SMART car may be the wave of the future. Scion is now testing the microcar waters by introducing the Scion iQ Concept at the New York Auto Show. Aimed at âyoung, urban trendsetters,â the iQ features all of the efficiency and technology that Millennials crave, while keeping with Scionâs tradition of offering customizable rides. For more new car reviews, interviews and automotive news visit http://www.kbb.com today.