Some of the speed bumps-like techniques here in Sweden will do more than just be a bump, it will severely damage the tires if you don't slow down. Curbs that require the driver to make very tight turns for example can be made from fairly sharp stone with an clear edge. A SUV/pickup truck can speed over it, but the trip to the repair shop will make it less fun.

They added some square-like flower pots in the middle of a lovely road next to where I live in order to force drivers to make a double S turn. Those are made from sharp rust-painted steel, and most of the corners are now painted with other peoples car paint. The only way to make it through is to drive at walking speed, which basically everyone do.