The mayor of London said he had no intention of cycling to work despite the popularity boost provided by the London start to the Tour de France.
Livingstone (left) said London's organisation was a success
Ken Livingstone, who has spearheaded a campaign to get Londoners cycling, said he had to consider his security.
"Someone riding along in the car behind me, seething with hatred, just runs over me so there's a small security problem," he told BBC London 94.9.
More than one million people lined the route of the Tour for the UK stage.
"I get an extra hour a day on the Tube or bus to read documents - that's four working weeks of the year and it's crucial," Mr Livingstone told Vanessa Feltz.
"As most probably my kids get older, we will get them bikes and we will go on biking holidays and I'll get back on one but I'll be very, very rusty."