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276kph is just the speed needed to break UK fastest speeding offence.

LONDON, England (AP) -- A rental car worker who was clocked at 276 kph (172 mph) in his company's Porsche was ordered jailed Monday for 10 weeks.

Tim Brady arrives at Oxford Crown Court on Monday to hear the verdict.

Tim Brady, 33, who was caught January 27, became the fastest speeder ever convicted in Britain. He beat the previous record -- 251 kph -- set by car dealer Jason McAllister in 2003.

Brady was caught driving the $198,000 Porsche 911 Turbo, which he took from his employer, luxury car rental firm HelpHire, authorities said.

Brady had nagged his boss to take the Porsche out the day before, but was repeatedly told no, authorities said.

Judge David Morton called the act "criminally self-indulgent."

"[You were] utterly thoughtless of the danger you might be creating for the innocent," he told Brady.

Brady, who admitted to dangerous driving, was banned from driving for three years and will have to take a new driving test before taking to the road again.

He quit his job a day after he was caught