UPDATE: A group of ladies from Poona were having lunch for their friend who was celebrating her 91st birthday when the crash happened.
Pauline Wallace, who is the owner of Poona Palms Caravan Park, witnessed the crash.
She was having lunch with her friends including a man named Allen Woods.
"We just got our meals and were happily eating and chatting and next minute I heard a big bang and I turned around and all I could see was Allen getting squashed up against the table," she said.
Mrs Wallace asked Allen to sit in the chair between her and the birthday girl being 'the rose between the thorns'.
"I could have been sitting in that chair that crushed him and I wouldn't have known what to do," she said.
"I saw two of my friends climbing out from beneath a table."
UPDATE, 1.55PM: Customers were knocked off their chairs after a sedan drove through the bistro at a pub in Maryborough.
Paramedics are treating seven people for injuries following the crash about 1.10pm on Friday.
A Queensland Police Service spokesman said patrons were being treated for minor injuries.
"We believe an elderly female lost control of the car," he said.
"It has knocked about three people off their chairs that may have been sitting outside.
"Nobody is seriously injured.
"The lady driver is being treated for a bit of shock.
"The three people hit may have experienced a bit of bruising but nobody is seriously injured.
"It appears she hit the accelerator instead of the brakes."
Update: single-vehicle crash at #Maryborough. 2 people treated for minor injuries. Crews cleared from scene without transport to hospital.— Queensland Ambulance (@QldAmbulance) August 4, 2017
EARLIER: Seven people are being assessed by paramedics after a sedan drove through the bistro at the Old Sydney Hotel in Ellena St, Maryborough.
Two ambulance crews are currently at the scene of the incident, which happened about 1.10pm on Friday.
It is believed several people suffered minor injuries.
The condition of the driver of the vehicle is not known.
"It appears the vehicle has driven into the building," a spokesman from Queensland Ambulance Media said.