(Ed. note: Changes have been made to this story from its original version.)
By Kasey Joyce
St. Louis (KSDK) - Our information center received a disturbing message Wednesday from a terrified driver.
The driver says she feared for her life while traveling on Interstate 55.
It happened just after 1 a.m. Wednesday morning.
The driver says she and some friends were headed home when they noticed a car in front of them swerving erratically on I-55.
They tried to get away from the car, but when they went to pass the car, the driver, who police have identified as John Schramm, flashed a gun.
The victim says he then pointed it at them and pulled the trigger.
The gun did not discharge, so they believed it was not loaded.
The woman and her friends slammed on the brakes to try and ditch Schramm, but he slowed down too. When they sped up, so did he. Finally, they made a u-turn on the interstate to get to safety.
Police eventually caught up to the Schramm and arrested him. When they did, they found out the gun was loaded with one bullet, and he had another in his pocket.
The woman says police told her that the Schramm tried to do the same thing to another driver. She says without the quick response of the St. Louis City and County police, someone could have been seriously hurt.
Schramm was charged with first-degree assault, armed criminal action, two counts of unlawful use of a weapon, unlawful use of a loaded fire arm, and two counts of driving while intoxicated.
He is held on a $50,000 cash-only bond.