Transfer efficiency is an important point, but I might also be a bit concerned about heat generation; a lot of wireless inductive chargers I've seen for small devices like ipods and such do seem to generate a lot of heat, which doesn't always do great things for battery systems. The vandalism/weatherproofing issues are good points, though, and worth consideration.
To be fair, I admit some bias. Every time there's a push for electric cars, I can't help wanting to play Rush's "Red Barchetta" pretty loud. I can see myself at either end of that: the uncle that lovingly preserves the outlawed sports car for his nephew, or the nephew who goes on a weekly race/drive just for the fun of it and has to outwit cops along the way, who are limited by their technology.