One woman was covered in blood, according to witnesses, who also pulled out an injured hairdresser through the smashed window of Prestige Barbers in Hoe Street, east London.
The driver of the White Prius is believed to have ploughed through the barbershop floor and out through the other window, according to witnesses.
London Ambulance Service (LAS) said it had “treated five people at the scene and took all of them to hospital, three as a priority” after the crash at around 1.50pm on Thursday.
None of the injuries are thought to be life-threatening, the Met Police said. The 65-year-old driver has not been arrested.
Saleem Mohammad, 40, from M S Carpets nearby said: “The car has come through one window and straight out the other side of the shop.
“I heard a big bang and came out.
“There was a woman screaming with blood coming from her face and trapped under a big piece of glass. People had to move it off her. I think she was just walking past or standing outside.
“One of the barbers looked worst hit he wasn’t moving or saying anything.”
LAS tweeted: “We treated five people at the scene of this incident in Walthamstow - where a vehicle collided with a building - and took all of them to hospital, three as a priority. Our crews have now been stood down from the scene.”
A worker from a pizza restaurant opposite the crash said: “We just heard a huge bang. It was a big shock. There was a barber and a woman lying there on the floor. There was glass everywhere.
“We heard the driver tried to dodge traffic and sped up then lost control.
“The barber is a very nice guy I hope he is ok.”
A Met police spokeswoman said: “Officers, along with colleagues from the Ambulance Service and the London Air Ambulance Service, attended the scene and immediately provided first aid to the 65-year-old driver and others at the location.
“All injuries are not believed to be life-threatening.
“A number of road closures are in place.”
Anyone with information please call 101 or tweet @MetCC quoting 3761/14Oct.
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