A 72-year-old woman drove over a hill, through a fence and into a swimming pool at Cheyenne Mountain Resort early Monday, Colorado Springs police said.
Janis Seifert reportedly also struck an occupied vehicle en route, causing minor damage.
Corey Youso, who was vacationing at the resort, said he was one of several people who helped the septuagenarian out of her submerged black Lincoln SUV about 7:45 a.m. No swimmers were in the pool.
Youso said the driver was dazed and having trouble with her seat belt, so he reached in and unbuckled it.
Seifert kept saying her brakes weren't working, Youso said, but her accelerator appeared to be stuck.
The pool was drained, and the car was lifted out about 5 p.m. The pool will reopen Tuesday morning.
"I think I need a vacation from my vacation," Youso said.
"I have never seen a car in a pool," said police Sgt. Fred Walker. "It was a first for me."
Seifert was cited for careless driving and taken to a hospital for evaluation.
Officers also wouldn't estimate the car's speed or the amount of damage it caused.
But they said the mishap could have occurred from driver error, as the woman might have mistaken her gas pedal for the brake. Drugs and alcohol are not believed to be a factor.