Burnout, Dore & Delux all clinch a playoff spot. There have only been six racers this season, so it's nearly guaranteed that Laf and Szymek will clinch their way in by points. Only if Mjay runs three more races and wins or somebody else joins the season and runs the last four races and scores a win, they are shoe-in's for the playoff field.
Realistically given the low attendance this season, it's just a matter of competing for the regular season +3 bonus and for +1 bonuses for wins for playoff bonus points at this point.