5th edition seems to be trying to make the distinction between vehicles and tanks. The choice of words seems to make this clear.
Page 68 is the beginning of the 'tank' section and it goes on to state what vehicles classified as tanks can do all the way until page 69.
The problem is this:
Vehicles classified as 'tanks' may tank shock. Fairly straightforward, yes?
It then goes on to state how ramming is a type of tank shock. Thus leading one to presume that only tanks may ram.
BUT, it then goes on to state the following:
The wording constantly makes the distinction between tanks and vehicles throughout, until you see the caveat of "MASS if the vehicle is a tank".
This causes myself a bit of confusion, as I presumed the distinction was rather cut and dried.
But it appears that any vehicle may ram.
This opens up all sorts of other questions as well, such as since ramming is a form of tank shock, but any vehicle may ram, may any vehicle also tank shock as well?
Hopefully this will be FAQed soon, as this could open up a huge can of worms.