Is the Chevy Volt just another hybrid?

I’ve been hear­ing a lot about Chevrolet’s new elec­tric car, the Volt. It is sup­posed to be America’s answer to Toy­ota in the green car exhi­bi­tion. On Chevrolet’s elec­tric car site, they proud­ly pro­claim, “It’s unlike any pre­vi­ous EV (elec­tric vehi­cle), thanks to its inno­v­a­tive recharge­able elec­tric dri­ve sys­tem and range-extend­ing pow­er source.” This “range-extend­ing pow­er source” can be gaso­line, E85, or biodiesel. Which makes it a hybrid, no? Like the Prius parked in my garage. The only dif­fer­ence seems to be that the Volt does not use the gaso­line engine unless you run out of elec­tric­i­ty, mak­ing elec­tric-only trips pos­si­ble for short dis­tances. Of course, I can do that today with a mod­ded Prius, or one I buy in Japan. The Volt is a plug-in hybrid con­cept vehi­cle with lot of mar­ket­ing hype. And not much else.