OAKFIELD TOWNSHIP, Mich. (WZZM) -- Road rage and driving under the influence may have contributed to a crash near Greenville that sent a man to the hospital by helicopter.

A pickup and a dump truck collided around 4:30 p.m. Monday on M-57 west of Wabasis Avenue in Kent County's Oakfield Township.

Police say they have evidence the driver of the pickup truck had been drinking before the crash, but suspect road rage was also a factor.

Witnesses say after the dump truck passed the slower moving pickup, the pickup driver sped up and passed the dump truck. The pickup then clipped the big truck's bumper trying to cut back in dangerously close.

"He hit the front of my truck," explains driver Gary Shook. "He cut in too quick. Scared me. I'm still shaking."

The pickup spun out of control, veered into a yard along the road, sheered off a few trees and rolled over.

"He went to pass and didn't give himself enough distance," says Sgt. Jeff Varga of the Michigan State Police. "I don't know if he was upset the dump truck passed him first and if he intentionally tried to cut this truck off in a road rage incident. We won't know that until we talk to him."

Paramedics say the pickup truck driver was in stable condition before he was flown to the hospital.

"The first responder here said he was not wearing a seatbelt," adds Sgt. Varga. "We believe alcohol was a factor."