What did you *think* the subsidy is supposed to do?
My immediate reaction was "well, yes, of course." Until electric cars are a commonplace, affordable standard, they will be a luxury item. If you use a subsidy in the hopes of increasing sales volumes and help boostrap the industry, you're not going to be giving that to the poor. Obviously, the idea here is to tempt those who *do* have disposable income to dispose it in the direction of a technology you'd like to see commonplace.
So the real question is one of whether the goal of "electric cars" is worthwhile. Notice how the comments threads immediately discuss its merits, while the classic "oh the government did something, and since you can't do anything for free it is by definition socialism" argument is generally not interesting.
Sure, giving money to the rich/upper-middle may be difficult to defend considering the current economic climate. If the goal was to provide efficient transportation for a broad range of classes, a better program might be to subsidize the purchase of scooters. :)