Some series page become very heavy. I think mostly to "Chips" series which is growing fast and has more than 300 vehicles for only 18 episodes currently listed!
For movies the biggest was with "The Junkman", which had still a reasonnable size with about 100 vehicles.
For some series a split on the seasons would be good, with one page per season, since there is no link between them (in the series "24" for example).
But for most of the seasons it is anoying because same vehicle can be used across episodes and seasons. And it does not solve the "Chips" problem.
We could also put the background vehicles on a second page. That would be a solution for the "too many background vehicles" problem, by the way: the important vehicles of the movie would be displayed on a separate page than the vehicle that do not play any role.
But for "Chips" there are already nearly 147 non-background vehicles...