With the Smart Fortwo becoming available in the United States, perhaps more sustainable attitudes toward transport will shift into higher gear. Who knows, maybe we will see a new generation of innovative modes of moving designs like BMW's C1 coming into the marketplace. It won't be easy to overcome significant challenges, as evidenced by the comparison image of the Smart Fortwo vs. Hummer H2 size. However, with new advances in active and passive safety coming to the market each year, perhaps we can find smarter alternative modes of movement before gasoline hits the $5.00 mark.