since i got my Rebel i had randomly drop in to the back of it (and remain there):
my rebel's hood
2 different traffic signs
empty water tank (those that serve as safety bumpers [or whatever you call them) on roads
road side power box/transformator
half a cactus
parts of a fence
... whatever else i've forgot
some of that stuff such as the phone really slowed my Rebel down, and made it tip over in a sharp turn. i never had this happen with other pickups, or at least not to a memorable extent. as mentioned in a previous thread the Rebel is also perfect for transporting a Blazer in its bed, so maybe it was programmed differently to other trucks? total idiot when it comes to programming, so i wouldn't know. just a little observation for those who care. that's all.
Edit: does anyone know of a bulldozer near/in Paleto Bay? i want to try and load one of those explosive crates from the Paleto Bay Ammunation in to the rebel's bed, combine it with the sticks and thus create a massive car bomb.