a parking lot or street (at a higher than normal speed) with both arms back to back. While my test was not back to back, there are a series of speed bumps in my neighborhood that I have to drive over every day. Basically it feels like I can hit them with a bit more speed, and it doesn't affect the car nearly as much. Where previously with the solid bushings, you could almost hear a distinct impact sound and definitely feel a harsh jolt in the car if you hit them with too much speed, which was less than what I'm doing now.
