An enraged motorist has gone on a rampage in the Burnley Tunnel, smashing a dozen cars with a steel bar before running away from police and jumping into the Yarra River.

Police said the 41-year-old St Albans man used a tyre lever to damage cars after flying into a rage over a collision he was involved in just before 1.30pm.

Tow job: One of the cars damaged after a driver went on a rampage. Credit:Channel Nine

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