BERLIN (Reuters) - German police stopped a 17-tonbulldozer weaving through Berlin's streets at 3 a.m. by jumping onto the excavator, smashing the window and spraying mace into the driver's face.

A police spokesman said a 28-year-old man was detained for drunk driving and may be charged with theft for taking the bulldozer on a four-km (2.5 mile) joyride Sunday after leaving a pub in the Berlin district of Neukoelln.

One of the officers climbed onto the moving vehicle, but the driver held the door shut. Only after the officer smashed the window and sprayed mace in his face did the driver stop.

"He was first spotted by a police squad car as he drove through a red light at about 35 kph (20 mph) and then ignored orders from the police to stop," the spokesman said.