Laura Trott has revealed that she promised to buy her sister Emma a car if she won two golds at the Games.
Giggling, Trott told BBC Breakfast: "I hope she's got a budget, there'll be no Ferraris, I'm telling you."
Talking about the future as she appeared on the sofa with six-time Olympic champion Sir Chris Hoy, Trott joked: "I could beat him, eh?"
Sir Chris Hoy has told Daybreak he is hoping for a "dream end" to his career at the Commonweath Games in Glasgow in 2014.
Double gold medallist Laura Trott, 20, also told the show how she is lucky to be alive after she was born a month prematurely suffering from a collapsed lung, leading to six weeks in intensive care.
The moment Jess Varnish and Victoria Pendleton sped to a team sprint world record, only to face the heartache of being disqualified, was the most memorable performance of the Games for Team GB cycling chief Dave Brailsford.
He described that ride as "dynamite", adding
"For them to be the first riders on the track. They got disqualified and it is really, really sad for Jess.
"She should take an enormous amount of pride that she got up on this track and was the first British rider with Vicky and they delivered a world record - that just set everybody up.
"That is the very thing that I will remember."
Sir Chris Hoy has spoken to ITV News about his triumph in the Men's Keirin Final on Tuesday.
He said he had been "blown away" by the whole day and it was "the greatest experience of my whole career".
He added: "This is what you train for, and aspire to achieve but when you actually do it is very hard to take it all in."
Victoria Pendleton spoke to ITV News after coming second in the Olympic sprint final to Australia's Anna Meares. It was her last ever race before she retires.
She said that she was happy with her silver and earlier gold medal for the keirin.
She added that it was definitely the right time to bow out, saying "it was an amazing atmosphere in there [The Velodrome], I'll never experience anything quite like it again."
Well happy for @chrishoy unbelievable career!!!! Proud to have competed along side him. #youllhavehimoneday
From @GeraintThomas86 on Twitter:Yeeeea! What a day at v'drome to finish off a spectacular olympics! @chrishoy @lauratrott31 @v_pendleton all brilliant!! Go GB!
From @Ed_Clancy on Twitter:Laura Trott has underlined her billing as the future star of British cycling with two Olympic gold medals in the women's team pursuit and omnium.
As her family photos reveal, the 20-year-old was already brushing shoulders with Team GB's established Olympians well before she joined the elite.
ITV News' Mark Austin went to meet Trott in the build up to London 2012.
