Really important is the entire drive based through the transition from start and excel mechanics into max velocity mechanics. A lot of people do one or the other but we find that it's the transition where a lot of forward is our one and lost. So you got to make sure you actually continue to drive as you rise up. Picture that airplane taking off off the ground. It's here it's gradually going up up up. We don't want to see their eyes or body pop up. We want a smooth transition phase.