HOT SHOTS: Scotty Mac getting it done.

Scott McLaughlin is the driver to beat in qualifying for this year's Indianapolis 500.

Running in the 'yellow submarine' for Team Penske on Fast Friday, when all engines run at full boost for the first time, the Supercars graduate clocked the fastest speed of the week at 233.954 mph.

Scott Dixon was second-quickest, with Aussie Will Power in sixth, as both Kyffin Simpson and Kyle Larson had heavy crashes during qualifying simulations.