they could put little groves in the track, paralleled by two rails one being positive, the other negative, then on the underside of the car they could put some sort of post that would sink into the track, and two leaf springs that would contact the rails, thus supplying constant power.
"I'm in the market for a new laptop, and I want a 13-incher. I need something with a great keyboard for typing, as this will mostly be used for note taking in class. I am absolutely smitten with the XPS 13, but I'm afraid that with its age Dell is going to give it an update soon. Any advice for someone in my shoes?"
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Shit, I need to patent this quick!