Fake rubber driveway spikes to deter non-authorized vehicles

This seems pretty nifty to be honest. It's a set of rubber spikes disguised to look like those real spikes you find at the entryway of parking lots to stop people from driving the wrong way or into a designated space. The only difference of course is that these bend safely once you drive over them. But seems like a funny way to make people not drive onto your own personal driveway. Get them here.