Following a chaotic event at Road America that featured nine full-course yellow flags and several penalties, including Porsche Penske Motorsport's driver Kévin Estre being placed on a two-race probation, IMSA officials held a media roundtable leading into the GT-only race weekend at Virginia International Raceway to address mounting driver aggression and outline a tougher stance from race ...<a class='more' href='https://www.motorsport.com/imsa/news/imsa-cracks-down-on-escalating-driver-aggression-ahead-of-vir/10848248/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-ALL&utm_term=News&utm_content=www'>Keep reading</a>