If the ride of your pickup or SUV too rough Sulastic has a solution for you. The call it a rubber spring, but it’s really a couple of bushings that damp the harshness of leaf springs. The company says the product can cut driver fatigue by smoothing out the ride, and makes the vehicle easier to drive with large loads or while towing. The device doesn’t affect load capacity, ride height or warranty. They make applications for everything from small to heavy duty pickups and vans.