Emergency crews have raced to the scene of a truck and bus crash west of Sydney. One of those was freed and treated at the scene by NSW Ambulance before being taken to Nepean Hospital in a serious condition. LAWSON: All westbound lanes are closed on the Great Western Hwy at Somers St due to a car and bus crash. — Live Traffic NSW (@LiveTrafficNSW) July 27, 2021But the other remains “severely trapped”. “A rescue plan is in place (for that person),” a Fire and Rescue NSW spokesman said.