The Tesla Model S was already a great vehicle, so there was little reason to give it a full overhaul. That said, the 2017 Tesla Model S does offer several notable improvements over prior models. Most obvious is the switch from the more traditional front end to one seemingly borrowed from the Model X, with no grille and a sliver of black in the center. Also on board is the Bioweapon Defense Mode HEPA air filtration system from the X, full LED adaptive headlights, updated seats, an upgraded charger, and two new wood decor options. And unlike most refreshes, the new models are available starting today.