Burnout, Black Lines Matter?

Testing out the setup on the back roads may not be the best for strip comparisons, but,,,.
When my buddy punched the scamp 512 ci on the back roads we would drift to the left every time. Maybe 100 feet of black lines shifting into the next lane. First, is this an issue? Second, What factors need to be evaluated? Alignment, tire pressure, Body setup etc.??? The roads were not very grippy. Also, We were moving along about 35-40 and he dropped the throttle and broke the tires loose, to give you some perspective about the traction.

These were all from about 5 mph and we broke loose just for the fun of it.

Is this normal?