Shawnee ? A would-be carjacker got away with nothing more than the keys Monday after he apparently was thwarted by the vehicle’s manual transmission.

The thief was armed with a shotgun when he ordered a 26-year-old man out of his Chevrolet Camaro in a suburban Kansas City parking lot. The driver complied, but when the robber got into the car he was unable to manage the stick shift.

The robber fled the scene in a four-door car that someone else was driving.

Police are investigating whether the attempted theft is linked to four similar robberies in Johnson County during the past week.