There seems to be quite some confusion about the scout car. I'd suggest playing with the Russians and trying the described strategy yourself.
Here are some of the basic facts:
-170 hp, although, I think that's been lowered and the stats on the new stat website do not reflect that change
-infantry inside do take damage and can quite effectively be burned out with flamethrowers
-the 20 fuel will entail that the Russian player will, for the time being, leave his conscripts weakened by forgoing updates for them or will slow down his technological advancement
-the scout car can easily be countered by an at mine, 2 panzerfausts, 1 panzerfaust to the rear and a bit of small arms or mg fire, 1 panzerfaust and a mortar barrage in the path of the now slowly (in most cases in reverse) retreating scout car, 2 mortar shells, 1 pack shot and a bit of small arms
-the scout car sniper combo is effective in some situations like the heavy tier1 strategy currently pioneered by Inverse since the manpower bleed can help to even out the odds. However taking into account that the heavy tier1 entails 3 Grenadiers on the field, the scout car is vulnerable to a well executed flank
-it is also important to keep in mind that putting a sniper in a scout car is a trade-off since you sacrifice the ability to target individual units for more mobility. If you choose to attack a specific unit the scout car will close the gap for it's own weapon to engage which is only slightly higher than the range of the panzerfaust. Disembarking the sniper team to get around this problem opens up a window of oportunity for the Germans to charge in, since both the sniper and the scout car will be stationary and not firing for a short moment. The same applies for boarding.
I've found and used plenty of counters to it, and there are undoubtedly more that I forgot to mention. Suffice to say that trying to get it from the front with one squad will not do it, you have to have a flank ready.
Drawing a parallel to the kangaroo is unwarranted since the kangaroos main problem was its high health and armor in the early stages, both of which were addressed in patches to the extend that the kangaroo went almost extinct
.