Well according to The DEW Line before the heat started to get on him it was an SUV of some kind with an sun roof
“[Osama] Bin Laden, before he got smart, he had the only white SUV that had a sun roof in Afghanistan … but he figured that out pretty fast,” Schulte said.
Does not give away too much but I going to guess it was a Toyota Land Cruiser. You might ask why, well when I visited the area in 2003 the hot new thing in the area for the rich was Land Cruisers, so much so that many held it in higher regard then a Merc or BMW. This is not too odd as Toyota trucks have been popular with terrorist/3rd world nations for a long time as they are nearly indestructible as proved by Top Gear.

and
makes you wonder if we should just not track every Toyota imported to the region