Not sure which mode is the best -- and don't know what state of charge the batteries were in. But it's not "quick." The tach ramps up to 5,000 rpm up to 75 mph then jumps to redline for the blast to 100 mph. Very smooth and linear accel to 75 mph then it takes off.
Very stable, very little drama and repeatable. Pedal is not too soft, as one might expect. Seat belt cinches up on ABS stops -- twice. Once on the pedal hit and once at full stop.
Even in "Sport" suspension mode, the LS is very soft. In fact, it lifted the inside front tire off the ground repeatedly. Understeer is heavy and inevitable. Steering is quite good with predictable accuracy but not much feel. Unlike the skid pad, the LS will oversteer in quick transitions. However even with "Sport" suspension mode, the car rolls a bunch while maintaining its line.