What benefit is there to making it a 2 wheel Segway based chasis over a simple golfcart style electric vehicle?

Looks like a lot of extra expense and cost for no real benefit (in typical GM fashion). I suspect it is simply a public relations attempt to show the public that they really aren't the backwards, bankrupt (intellectually and financially), rusty, behemoth of a company that can't tell a good idea from a publicity stunt that everybody takes them for.