A BMW has been stolen while being test driven by a potential customer in Llandarcy, Neath Port Talbot.
A 26-year-old woman was flashed down and ordered out of the black 1 Series model while returning it to Corner Park car showroom on Fabian Way.
She was stopped by two people in a Ford Focus on Sunday afternoon, who then drove off in the BMW.
South Wales Police said it was a "very unusual" incident, which had left the woman "shaken".
The theft happened near a gas distribution depot on the B4290 between 1400 and 1430 BST on Sunday.
Two occupants of a green Ford Focus approached her and then drove off in the BMW.
A third person drove off in the Ford Focus, which as described as being the colour of a Granny Smith apple.
The BMW has the registration number RF07 MVH and had the woman's handbag inside.
'Yet to be traced'
Det Ch Insp Simon Davies of Neath Port Talbot CID said: "This is a very unusual incident and although the victim was unhurt it has left her shaken.
"We are appealing to anyone who may have seen the two vehicles near the entrance of the gas depot between Llandarcy and Jersey Marine between 2pm and 2.30pm on Sunday afternoon to come forward.
"The stolen BMW has yet to be traced and therefore we are also appealing for any sightings of this vehicle since 2pm on Sunday.
"Numerous enquiries into this incident have already been carried out and we are appealing for the public's help for information about this crime."
The woman's handbag was a black satchel with a zip and tassels containing a pink purse which had an inscription on it.
One of the suspects is described as white, aged around 30 with a young-looking face. He was of stocky build and was approximately 6ft (1.83m), with a shaved head and was wearing a red T shirt.
The second was also white, aged around 30 and of stocky build. He wore dark clothing and had short dark hair.
Anyone with information about the incident should contact South Wales Police on 101 or Crimestoppers on 0800 555 111.