The Smart car is getting a lot of attention for its small size and style, and now it’s earning impressive crash test ratings. In recent Insurance Institute for Highway Safety tests, the 2008 Smart Fortwo, the smallest car for sale in the US market, earned the top rating of good for front and side crash protection. Its seat/head restraints earned the second highest rating of acceptable for protection against whiplash in rear impacts. Smart Fortwo is classified a microcar, meaning it’s smaller …