Here is a working mockup of an effective wireless remote controller for an HO slot car track. This example uses Tomy track which is also compatible with Auto World track. With proper thought, any HO track could be adapted.
Not to pick on anyone but Tomy or Auto World would do good to investigate this idea. The hobby needs something really cool and effective to increase enjoyment of the product – AT ALL AGES. I dare say the holographic pit stop that Tomy did a few years back was just a money pit. Manufactures, PLEASE do something for the hobby that is not just a clever toy.