The incident occurred around 9.30 p.m. on Sunday, May 1st, in the Lynchford Road car park.
A black BMW X1 was reported stolen after two men approached and threatened the 50-year-old male victim as he sat in his car.
Bank cards have also been stolen.
The car has since been found.
A Farnborough man, 33, was arrested on suspicion of robbery, and a Farnborough woman, 34, was arrested on suspicion of handling stolen goods.
Both have been released under investigation while the police investigate.
Anyone with information should call police at 101 and reference 44220171064.
You can also report any information you have on this case via our website at https:///www.hampshire.police.uk/tua/tell-us-about/cor/tell-us-about-existing-case-report/.
You can also make an anonymous call to Crimestoppers at 0800 555 111.
