Gleaming the Cube Bloopers & Goofs

Gleaming the Cube Picture
See the goofs, blunders and plain ole mistakes in the 1989 Action / Adventure movie starring Christian Slater, Peter Kwong, Steven Bauer et al.
Contributed by: Mike.
When Christian Slater's charachter is skating in the building site he is on a Mike Mcgill ramp/street board, then a few shots later he is doing freestyle tricks on a freestyle board.

Where did the extra board come from as he didn't have it with him?
Contributed by: chimpanshane
When Brian blow up the WMS building, he uses his skateboard to wheel the kerosene, how come the board did not burn?
Gleaming the Cube