"The problem here is Murphy's Law. In the absence of CCTV footage, we've got to do the best we can," he said.
Mr Bradford said Fungavaka told police in his first interview after being arrested that when he started his car on Pukepoto Rd that night, Ms Manuel came across the vehicle and he thought he bumped her leg.
The defence will also call a private investigator and Detective Sergeant Trevor Beatson to give evidence.
Fungavaka took the witness stand yesterday and told the jury he met Ms Manuel in a pub in Kaitaia abut a year after moving to the town and they were in a relationship for 18 months.
He admitted he had three previous convictions, including one for drink-driving and another for common assault for which he was convicted and discharged.
When asked about his relationship with Ms Manuel, he said it went "very well."
Fungavaka said before they got together, he told her to stop certain things that she did in life. When asked to elaborate, he said he asked her to stop taking drugs. His evidence continues today.
Fungavaka has been in custody since he handed himself in at Whangarei Police station on August 21, 2013.