Mr Huhne has said the police investigation will "get to the bottom" of the matter A spokesman for Mr Huhne, who has previously insisted the claims are "incorrect", confirmed he had helped police with their inquiries.
The police also interviewed one other, as yet, unnamed person on Tuesday.
"Chris Huhne helped the Essex Police with their inquiries today and looks forward to an early resolution of this issue," a spokesman for the Cabinet minister said.
The energy secretary and MP for Eastleigh is currently involved in divorce proceedings from his wife of 25 years, economist Vicky Pryce, whom he left for another woman last year.
The police launched the investigation into the speeding claims - which would constitute a criminal offence - after a complaint by a Labour MP earlier this month.
Mr Huhne has said the allegations, which first surfaced in a number of national newspapers, had been "made before and been shown to be untrue".
Downing Street has said the prime minister had "full confidence" in Mr Huhne and he had denied the allegations.
Mr Huhne is one of five Lib Dems in the cabinet and narrowly lost out in a leadership contest against Nick Clegg in 2007.
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