Elon Musk reckons he can cut $2 trillion from the US government's spending plans, almost a third of their yearly budget. He's the latest in an string of public figures promising to cut 'government waste'. With rising bond yields wiping out Chancellor Rachel Reeves's fiscal headroom, does she too need to think more drastically about government efficiency? Our senior economy reporter Phil Aldrick joins us to discuss. Hosted by Stephen Carroll and Lizzy Burden.