The first-generation Corvair featured a "rear engine + swing axle design" similar to that of the Renault Dauphine and Volkswagen Beetle – a design which eliminates universal joints at the wheels and keeps the rear wheels perpendicular to the half-shafts, rather than the road surface. The design can allow rear tires to undergo large camber angle changes during fast cornering due to side g-forces causing "rebound" camber and decreasing the tread contact with the road surface, leading to a loss of rear wheel grip and oversteer—a dynamically unstable condition where a driver can lose control and spin. The problem is most severe with rear-engine swing axle combinations because of the greater inertial mass over the rear wheels and the higher center of gravity during rebound camber conditions. The additional high weight of a station wagon body also exacerbates the tendency. Oversteer is exacerbated by deceleration during cornering due to increased side g-force and lightened load on rear tires (lift-off oversteer). Understeer is common in front-engine cars, due to more weight, and inertia, on the front tires. Both conditions are dangerous when a car is driven at its cornering limits. Design options to ameliorate swing axle handling: