Woah long documentary. I love SUVs except Prados. Likely to flip you.
In Africa SUV is definitely a must - roads are terrible- you definitely need 4WD with high ground clearance.
Just dont drive them fast like many morons in Kenya.
You have to know a SUV indeed is a light truck - never go beyond 80 km. I personally drive rarely above 80 - never beyond 100kms. If a cop stop me for over speeding that will be hilarous.
In Europe or US - it not necessary.
SUV should definitely be classified as Trucks - with low speed limits - and there is really no need sticking a powerful fast engine - you need torgue - so huge diesel truck engine.