Other mistake: When Morris is chasing the ambulance on his bicycle, he gets pushed/bumped towards the picnic table. As he tumbles over the table into the water you can see handle bars attached to the bicycle, however whilst Morris is flying through the air (separately to the bicycle), he is holding a second set of handle bars in his hands. (00:42:50)
Suggested correction: He grabbed onto the handrail bar on the back of the ambulance. That bar broke off, which is why he went straight when the ambulance turned (and the why he has a look of surprise on his face). It's that bar he's seen holding, not handlebars.