NEW YORK — Toyota's investigation of sudden acceleration in some of its cars is shifting to suburban New York, where a driver said her Prius sped up on its own and slammed into a stone wall.

Technicians from Toyota will join government investigators in Harrison, N.Y., today to inspect the car.

Toyota plans to examine an internal data recorder that documents the moments before and after a crash.

The company will use equipment to determine how many times the driver hit the brakes and gas. It used the same tools earlier this week to cast doubt on a California driver who claimed his Prius sped to 94 mph before a patrol officer helped him stop it.