The victim reportedly suffered a miscarriage due to the attack.
The Toyota drove off as if nothing had happened, despite a large dent on its side.
The teen filed a police report after feeling guilty about his involvement with another underage girl.
The teacher had reportedly taken a leave of absence last year due to depression.
Surgeons also removed multiple gastric stones, some measuring up to 6cm.
He was sent to hospital for treatment.
During the transition period, urgent counter services will be provided only upon request.
He is the third Singaporean radicalised by far-right extremist ideologies to be dealt with under the ISA.
A woman was about to board a taxi with two children when the car slammed into them.
Without her family's knowledge, she managed multiple extremist groups online, some with over 1,000 members.