A man and woman have been jailed after robbing their victim’s Fiat 500 and speeding down the motorway. Jade Cosier took advantage of her victim, who she knew, and entered his home in Tower Hamlets, Dover, on April 16. The 28-year-old asked to borrow money when she and the man in his 60s went to a cashpoint to make a withdrawal. When they returned, 24-year-old Erik Horvath and two 17-year-old boys – who can not be named for legal reasons – were at the property. It is believed they entered through a door Cosier left unlocked. The group demanded his car keys and took off with them and his bank ca…