We understand like any other job, drivers deserve because they work had too, trust us when we tell you driving is not an easy task, specially when they are driving non stop 8 to 10 hours a day and going through rush hours. So we take good care of our drivers, we give them 20%, which is separate from the base rate, so that 20% goes traight in drivers pocket. But if you want to tip extra, that is always appreciated by the drivers and we don't mind at all.