Welcome to the JAM course!
Here, you face the Bionic Lester (or the homie next to you) in back-alley competition to rack up the most points for time, combat, and destruction!  Ditch or crash obstacles as you please ... it's not like it's YOUR yard you're messing with!  Beat your opponent to the finish line or beat him to a bloody pulp!  It's all good in the JAM!
Bottle
Below are the jam obstacles you can trash for points.
Trash Can
Soda/Beer Can
Or, be a punk NOW and wreck the alley on the map to the left.  Have fun!  SKATE OR DIE!!!