Beyonce suffered a pretty serious scare in London's Knightsbridge neighborhood the other night during a momentary stop that took place during an evening out on the town with Jay-Z. Apparently, she requested a quick detour to shop at U.K. luxury department store Harrods while on the way to a Japanese dinner at local hotspot Zuma and opened her door only to have a speeding black taxi cab drive by and rip it clear off the body of her Mercedes S-Class. Witnesses are saying that Bey and Jay were both clearly freaked out by the incident.

"It was terrifying to watch," a witness told The Sun. "It all happened quickly. The taxi came out of nowhere. She seemed very shaken and was lucky to be alive. A couple of seconds difference and God knows what could have happened."

The fluke accident reportedly spooked her out enough that the shopping trip was canceled and the power couple received a new ride before continuing on to their dinner date. Bey has been in England for the last few days as Jay-Z performed at London's Wireless Festival in Hyde Park. She's been seen driving around, partying backstage with friend Gwyneth Paltrow and doing tons of shopping at various chic boutiques across the country's capital.