General Motors Co. is cutting almost half of the workforce in the Cruise driverless car unit, according to an internal memo and people familiar with the matter, part of a previously announced plan to halt robotaxi service and absorb the operations into its broader business.

General Motors is laying off off roughly half of its employees who remain at its discontinued Cruise robotaxi business.

Autonomous vehicle company Cruise is laying off “nearly” 50% of its workforce — cuts that extend to the CEO and several other top executives — as it prepares to shut down operations. What remains of Cruise will move under parent company General Motors as the automaker directs its resources towards improving its hands-free driver assistance system Super Cruise — and eventually rolls out personal autonomous vehicles.