Hummers and several different new Pontiac models were the "show vehicles of choice" for many of the SEMA displays. And while it is difficult to tell exactly what product this Hummer is promoting, due to the huge number of sponsor stickers on the back of this behemoth, it is actually the strands of Light Emitting Diode (LED) lights strung and mounted inside and outside this GM vehicle which this company wants you to notice. LEDs were big-time popular at the show, and exhibitors told us that while neon lights are still popular, they are being replaced by the less expensive, safer and longer-lasting LEDs.