The car was stolen from a Palmerston North address early that morning.
Detective Carl Newton said no person should be placed at risk of harm, simply for doing their job.
"This offence was a brazen attempt to rob this business and understandably caused significant distress to the victim.
"Fortunately the victim suffered no physical harm but this offending is serious and the people responsible need to be identified and stopped."
Police believe the offenders may have canvassed the area before committing this offence and encourage anyone who may have information about this robbery, or the vehicle used, to contact Detective Newton on 06 213 9578.
Alternatively, ring Crimestoppers anonymously on 0800 555 111.