No driver is ever going to tell you they enjoy getting airborne during a race, but that’s been a repeated occurrence over the past couple of weeks. The question of how NASCAR can keep the cars on the ground during wrecks is a major one and a highly discussed one at that. Brad Keselowski became the latest driver to chime in on the topic Saturday ahead of Sunday’s Southern 500 at Darlington. While Keselowski doesn’t have the answer for how to prevent cars from going airborne, he believes something needs to be done. CLICK HERE to go to PrizePicks and use code ON3 to receive a guaranteed $50 once …