An amateur boxer pummeled the side of the Holland Tunnel with her car Saturday morning before she was busted on drunken-and-reckless-driving charges, police said.

Susan Jugo, a New Jersey Diamond Glove semi-finalist, was stopped in Jersey City at 5:30 a.m. after a Port Authority officer witnessed her slamming into the tunnel walls.

Jugo, 25, of Belleville, NJ, even fell over during sobriety testing, sources said.