Let’s say this 150-page storyboarded-screenplay is for a 100-minute film.
So that’s 1.5 pages/minute, or 40sec/page.
The motorbike frame is 1/3 page – is 13 seconds in the movie.
(If this was a Mission Impossible film, any motorbike scene would be several minutes of high action…) 
So a scene like this could be stretched, or made shorter. 
It’s important to break up talking scenes, that demand higher concentration, with ‘relaxing’ visual action. 
A bigger point is on one way to ‘time’ a scene before shooting, with ‘page-space-used’ as the guide.