Saw the aftermath just now.
After the flyer-over along Upper Serangoon Road towards Potong Rasir, in front of the huge old cementry, where the freaky MRT station is never opened for years.
One Black Hyundai Matrix smash thru the centre railing hitting into a Police car's on the opposite direction, crashing into the Police Car bonnet. The Police car was on the extreme right lane next to the railing, towards the direction of the fly-over.
The Hyundai matrix is still stuck in the railings, with its front still connected to the poice car bonnet.
Wonder how this freaky accident happened...