Mona Vale Rd.  Horrific: A petrol tanker explodes on Mona Vale
Road on Tuesday afternoon. Photo: Supplied  Peter Wem was a
life-loving, do-anything-for-you kind of person, volunteering at
a northern Sydney scout group in his spare time.  He and his
wife Margaret had just returned from a three-month caravan
holiday. But on Tuesday afternoon, after a trip to the northern
beaches with friends visiting from Victoria, their car collided
with an out-of-control petrol tanker. And the consequences were
fatal.  Mr Wem was driving his Subaru when he collided with the
tanker carrying 50,000 litres of fuel, as it hurtled down the
wrong side of Mona Vale Road.  The road is closed as the truck
fire rages out of control. Click for more photos  Fatal car
crash in Mona Vale  The road is closed as the truck fire rages
out of control. Photo: Tim Pascoe    • The road is closed as the
truck fire rages out of control.   • The truck in flames.   •
The fire rages out of control as rescue workers move in.   • The
truck and vehicle ar