The Congress got out its top gun on the economy on Tuesday, fielding former Prime Minister Dr Manmohan Singh in Gujarat to amplify party vice president Rahul Gandhi's attack on the Narendra Modi government's mega reforms, the notes ban and new national sales tax GST. Dr Singh said the "twin blow is a complete disaster for our economy, it has broken the back of our small businesses." He also slammed the bullet train plan as an "exercise in vanity."