Harry Watson was flown to a hospital in London by air ambulance after police were alerted at around 4am on Good Friday [April 19].
He remains in critical care but his condition is described as stable. His family have described his injuries as ‘life-changing’.
Mr Watson works at Wear ’M Out softplay centre on Sovereign Way. The venue was closed on Saturday as a mark of respect.
The incident happened between the junctions with The Ridgeway and Higham Lane.
Firefighters, paramedics and the air ambulance were called to the scene, and the road remained closed until midday.
The teenager was hurt after the silver Renault Twingo he was travelling in rolled across a grass verge and onto a footpath.
The car was found on its side with passengers trapped inside. Heavy rescue equipment was used to extract them from the vehicle.
A second 17-year-old boy from Tunbridge Wells was arrested at the scene on suspicion of causing serious injury by dangerous driving.
He was released on bail pending further enquiries until May 17. Four other passengers in the vehicle sustained minor injuries.
The Serious Collision Investigation Unit want to hear from anyone with CCTV or dashcam footage of the incident, or of the vehicle being driven prior to the incident.
Anyone with information is urged to call the appeal line on 01622 798538 quoting reference 19-0223 or email sciu.td@kent.pnn.police.uk.
