Rights make strange bedfellows. Sharp and Trail were dangerous rivals early on, and still have a strong distrust for each other. They both want to stop the cricket brothers, but from different motives and with different means. So, Mark finds himself trying to stop Sharp from exposing the two brothers out of concern for his dad’s safety. And here he is, trying to save Sharp from getting run over by Cricket Bro. If the Brothers had any doubts about Mark, they have been resolved.
For some reason, Trail and Sharp decided to exit the DJ platform, rather than stand their ground. And that must be why Cricket Bro chose to pursue the two in his car, his so-called Cricketmobile. It is completely colored from roof to hubcap in a single color, as if it was the Batmobile. Mark’s response lends support to the allusion. Based on the way Rivera normally writes sound effects, I would not be surprised to see “Accelerate!”, rather than the traditional “Vroom!”