Its appearance was often criticized, and it was accused of forcing cars to become airborne in high-speed spins such as the one experienced by Carl Edwards during the 2009 Aaron's 499 at Talladega Superspeedway.
Penampilannya sering dikritik dan dituduh bisa membuat mobil terbang di udara jika terjadi kecelakaan dalam kecepatan tinggi seperti yang dialami Carl Edwards dalam lomba Aaron's 499 2009 di Talladega Superspeedway.