The memorial in Che's garage indicates his wife died in 1985. The banners in the graduation scene read "La Mission High School Class of 2009". Since it is very clear Jes was a model student, it is doubtful he would be graduating high school at the age of 24 or higher.
In several of the "Cruising" scenes, the Thermador Cooler on Che's vintage car disappear and reappear several times throughout the scenes. When they show close-ups of the passenger side window, the Thermador Cooler (the tube device on top of the passenger side door) is gone, while in most of the long shots, it is back. In one close-up you can actually see the wear marks of where the cooler sits on top of the door frame where they took it off for the close up.
In the opening scene, Che is shown putting the poles of a trolleybus onto electric wires above. When the bus pulls up to the bus stop, Che is driving one of Muni's Hybrid/electric buses, which runs on its own power and does not have trolley poles.
After Jes and his dad fight, Jes has a fat lip on the left side. A few scenes later, Jes is having his lip tended to at the home of Rene (Jesse Borrego) and the lip looks to be swollen and bleeding on the right side because he is looking in a mirror.